What the Monarchs Need Now
Posted on Tuesday, September 14, 2021 · Leave a Comment
Monarch feeding on New York ironweed
Monarchs are on the move! It is time for their long trip to Mexico to spend the winter. And like marathon runners, they need to bulk up on calories before the event. You may have let a patch of milkweed grow on the edges of your property to support them. That is great, and many of us have done that. But the milkweed plants are for the caterpillars to munch on. Right now, they offer nothing to monarchs. Our monarchs need blooming flowers for nectar and pollen.
Of the monarchs I see floating around my gardens, three plants seem most attractive to them for feeding right now: Joe Pye weed, goldenrods and asters. Let’s look at these and their garden worthiness.
Joe Pye weed ‘Gateway’ blooms longer and better than the wild forms
Joe Pye weed (Eupatoreum maculatum) is a native wildflower that likes stream edges and places with good moisture, though it will grow almost anywhere it is planted. It is a big plant, often 5 or 6 feet tall in the wild. It is a clumping plant, with the clumps getting bigger every year.
It is readily found in plant nurseries, although most sold are a named cultivar, one called ‘Gateway’. I have found that Gateway blooms longer and does better in a vase than the truly wild ones that have popped up along my stream. There is now a smaller Joe Pye that is called ‘Little Joe’ that only gets to be three to four feet tall. It is a patented variety that does not breed true, and is actually a different species in the same genus, Eupatorium dubium. Then there is one called ‘Baby Joe’ but I have not yet tried either one.
The flowers of Joe Pye weed are a light purple and appear in large panicles at the top of the plant. The stems of Gateway are a deep purple, though the wild ones tend to be greener. Plant Joe Pye weed where you want it as the fibrous roots go deep into the soil, and when firmly established they are nearly impossible to dig out.
Goldenrods are a wonderful, though frequently maligned genus of plants. For many years they were prohibited in arrangements in the flower room at our county fair, as it was believed they caused hay fever. They do not. They have a heavy, sticky pollen that does not fly in the air but is transported by insects. There are at least 20 species of native goldenrods including some that prefer shade, while others demand full sun.
‘Fireworks’ goldenrod is commonly sold in nurseries now
Goldenrods are important not only for monarch butterflies, but also for many butterflies, moths, bees and other pollinators. And yes, some of the big, sun-loving species will expand their territory and send tenacious roots deep into the soil, even muscling out some dainty perennials.
Years ago I purchased some blue-stemmed goldenrod ( Solidago caesia) at The Garden in the Woods in Framingham, Massachusetts. I grow it in both dry shade and in rich soil in moist shade. It has never been a pest, or traveled around my garden beds, staying just where I planted it, blooming in September and into October. It is quite dainty.
My favorite goldenrod is a variety called ‘Fireworks’ of the species Solidago rugosa. It prefers full sun and moist soil, but I have also grown it in part sun and fairly dry soil. Its flowers are tiny, blooming first at the tips and working their way down the 3- to 4-foot stems. The stems arch gracefully like a fireworks display. They can be divided every 3 to 4 years to keep the clumps to a manageable size, and to increase (or share) them.
All the asters and aster-family flowers are great for monarchs and other butterflies. Scientists don’t call the genus aster any more, but Symphyotrichum, which is a shame as it is much less user-friendly.
There are at least 30 species of asters that grow wild in America, including many nice shade-loving ones that are certainly uprooted as weeds by tidy gardeners long before they bloom now, in the fall.
This woodland aster grows in shade as a wildflower
Asters have flowers with many rays and a bright yellow eye. They range from deep purple to white, along with pink and a light blue. All are quite tough, surviving any winter thrown at them.
Similar to asters, and a plant I just saw visited by a hungry monarch, is New York ironweed (Vernonia noveborancensis). It has smaller, deep purple blossoms in big clusters at the top of stems that can reach 9-feet tall.
According to Tracy DiSabato Aust, in her fabulous book, The Well-Tended Perennial Garden, shorter, later-blooming plants can be created by cutting back all the stems to the ground when they reach 2-feet tall. I shall certainly try that next spring. I moved mine from moist soil to dry soil in part shade partly because it got too tall in the full sun.
If you care about your monarchs, plant native plants. Native plants are much more useful to pollinators and wild animals than plants imported from other continents. Many of the native plants are just as beautiful and pleasing to me in the garden, and hopefully they are to you, too.
Make Your Own Compost to Build Better Soils
Posted on Tuesday, September 7, 2021 · Leave a Comment
Most gardeners do some composting. Some folks compost anything that once was part of a living plant, often mixing it with barnyard waste; they turn and aerate their piles and make terrific compost in record time. Others are lazy composters who just throw kitchen scraps or weeds in a pile and let it slowly decompose over time, allowing it to gradually decompose. I’m a lazy composter. I have do much to do in the garden to take the temperature of my compost pile (though I have, actually) or check it weekly for moisture content – let alone turning it regularly.
Good compost is worth its weight in gold
Let’s look at the basics: organic matter – leaves, weeds, moldy broccoli or cow manure – is digested by bacteria and fungi. These microorganisms exist in amazing numbers in biologically active soil or compost. But for them to multiply and breakdown organic matter they need a good supply of materials containing lots of carbon and a little bit of nitrogen. Both are needed to build cell walls of the little critters and the proteins and oils in their bodies.
Scientists tell us that by weight, your compost pile should be 25 or 30 pounds of material containing carbon for one pound of nitrogen. Carbon-containing materials include dry grass or leaves, straw – and in general, brown materials. Nitrogen-containing things are also referred to as “green” materials – fresh grass clippings, weeds and household kitchen waste. Just to confuse you, all manures – which are brown – are also full of nitrogen.
We keep a 55-gallon drum of dry leaves next to our compost bin. We fill it in the fall and pack down the leaves to get in as many as possible. Each time we empty our 5-gallon bucket of kitchen scraps into the bin, we take some leaves and add them on top. This adds carbon to the pile, and helps a little to keep flies from finding the goodies. These leaves are certainly is not in the ratio of carbon to nitrogen we need for the fastest composting, but it helps. We count on the kitchen scraps to have some carbon, too.
For weeds, we just pile them up and let them decompose over time. We suffer from an infestation of goutweed, a noxious invasive. We try to keep any goutweed out of piles that will eventually be used for compost as even a scrap of root can start a new place for it to grow. Other invasives we do not have – but would separate if we had them include Japanese knotweed and black swallow wort. In fact, anything invasive should not go in any compost pile you hope to use later.
What else should stay out of compost piles? Meat scraps, oils and fat, dog and cat feces. Shredded newspapers and office paper can be used in compost piles – they are carbon-based, and their inks now are made from soy products. Shiny color inserts and magazines I avoid using. If you add shredded paper to your compost pile, mix it in well – thick layers will not decompose easily.
What about weed seeds in compost causing problems when you use your homemade compost? Ideally, if you are doing everything right, your compost pile will heat up enough for a few days to kill the weed seeds. That means curing it for three days at 140 degrees F. I ‘ve done experiments using annual grass seed and a soil thermometer, and found that even day or two at 135 will kill those seeds. Weed seeds may be tougher, of course. And it is tough to get an entire compost pile hot at the same time.
So how do you get your compost to heat up? You need to layer green (Nitrogen-containing) and brown (Carbon-based) materials. The key is the nitrogen layer. Fresh grass cuttings are high in nitrogen and easily collected with a bagger. Mix them in your compost pile, and it will heat up. Poultry manure, or any manure is also high in nitrogen and will heat up your pile if mixed in. Compost thermometers look like meat thermometers with a longer probe, and are sold at garden centers or on-line.
Moisture level is important for making compost. The pile should be neither dry nor soggy. A handful should feel about as moist as a squeezed-out sponge. I place tree branches underneath a new compost pile to help with drainage. Never put a pile where a roof dumps water.
Your compost should be well aerated. You want aerobic decomposition. So some gardeners turn and fluff their compost regularly, which will help with that.
I add compost to the planting holes for my tomatoes and kale, and work some in for everything, in fact. Why? Because even though I have great soil, compost gets oxidized, breaks down, and gets used up. Plants extract minerals from it. Beneficial bacteria and fungi use it to build their bodies. I try to keep my soil fluffy – roots do better in soil that is loose and aerated – and compost helps me to create that most desirable of soils: a nice loam.
Even though I make compost, I also buy it by the truckload. It is available from farms, garden centers and others. Ask for hot-processed, aged compost to avoid weeds.
There are no poor gardeners, just poor soil. Add compost, and perhaps a little organic fertilizer and you will have a “green thumb.” It takes time to make compost and build soils, which is why you should start now!
You may reach Henry at
henry.homeyer@comcast.net or PO Box 364, Cornish Flat, NH 93746. He is the author of 4
gardening books.
Do You Deserve a Medal?
Posted on Wednesday, September 1, 2021 · Leave a Comment
As I walked around the garden recently with my wife, Cindy Heath, she turned to me and said, ”Anybody whose gardens looks great at this time of year deserves a medal.” I allowed that we did not deserve a medal. Wanna get the medal? Here are some tips I have come up with.
First, pull any tall weeds. By now a few vigorous weeds can tower over flowers in your garden if you let them. Pull them before company comes if you don’t want to be embarrassed by your sloth.
Pull tall weeds like touch-me-nots to make the garden look better
I have lots of jewel weed (Impatiens capensis) in partly sunny to shady flower beds that have rich, moist soil. It is a native plant, but one that can take over if you let it. I recently removed some that was well over six-feet tall. It was in a bed with tall perennials, and I guess it outgrew them to get more sunshine, In other places, where the completion is minimal, it might only get 3- or 4-feet tall.
According to the US Forest Service website, it is one of just a few native plants that can outcompete garlic mustard, a terrible invasive in our woodlands. So if you have it, and have garlic mustard, you might want to let it survive – and enjoy its bright orange and red flowers that I find cheery.
Next on my list, I’d recommend deadheading flowers that have gone by and are looking shabby. I have a huge bed of Shasta daisies in front of our house, but they were in their prime a couple of weeks ago. Cindy cleaned up the flowers with a pair of scissors in just 10 minutes. It made a huge difference to remove all those spent blossoms. There are still many flowers in that bed that look fine, so we didn’t need to cut it all down.
Bleeding heart is a favorite flower of mine. It’s a big plant that blooms in early summer in either pink or white. But by now the flowers are long gone, and the leaves have turned yellow. What to do? Cut back the foliage to the ground. Don’t wait until fall or frost to arrive, just cut it back now. Do the same throughout the garden.
Fall asters can be used to add color where you have cut back faded perennials
So what can you do with those empty spaces where you cut back flowers that have declined to the point that they needed to be cut back? Depending on the spacing, you might be able to fit in some chrysanthemums or fall asters. These are sold in bud or bloom in pots in grocery stores, farm stands and garden centers. They will bloom for weeks so long as you do not let them dry out. Fall asters are in the same category as the more common mums: inexpensive and lovely for filling in empty places.
Fall mums and short purple asters are often sold in compressed cardboard pots. Unfortunately, these dry out very quickly. If you leave the plant in them, you need to soak the pots and plants regularly, generally more than once a week. The solution? Plant them in the ground when you can, or put them into plastic, fiberglass or ceramic pots.
Chrysanthemums are nice fall annuals that will add color to your garden. They are readily available.
I can’t plant mums where I’ve cut back that big bleeding heart, for example as I would damage the roots if I dug there. But I can place them in a nice ceramic pot and set it gently in the same area as the bleeding heart, though perhaps a little forward or back from the stubs of the stems. Yes, it is work to do so, but it is worth the effort if you have it in a prominent spot that you (and your visiting friends and neighbors) will see.
In the vegetable garden many plants are suffering from a variety of fungal diseases. Mold and mildew are common and make leaves ugly. The solution? Cut off the leaves. There are usually newer, undamaged leaves, and new leaves on things like squash and pumpkins are still growing. Once a leaf has mildew, you can’t make it look good, so get rid of it.
Henry Eiler rudbeckia was tied up twice to keep it from flopping
Tall flowers are flopping over now, particularly if we get a heavy rain. I grow a black-eyed Susan, Rudbeckia ‘Henry Eiler’ that has gorgeous, unusual blossoms, but it grows to be over 6 feet tall. I surrounded the big clump with hardwood stakes a month ago and tied string from stake to stake to support it. Recently I tied another tier of string higher up on the 6-foot stakes to prevent flopping.
For some things I can avoid using string by pushing stakes into the soil at roughly a 45-degree angle, two of them in an “X” pattern. I push the flopper up then support it with the two stakes. For smaller things I use bamboo stakes, for larger, heavier things like New England asters that can by 5 feet tall, I use 5-foot one-inch hardwood stakes. Paint them green if you don’t want to notice them.
Squash leaves with disease should be cut off
What about the lawn? By Labor Day it may be looking pretty shabby. I don’t believe any of us should waste water on our lawns. If you have a sunny yard with sandy soil, your lawn may be looking yellowed and dry. Crab grass, an annual that fills in where the lawn is compacted by foot traffic, is declining or dead by now in most places. My solution? Hope for rain, and try to avoid looking at the dead spots. Enjoy looking at that medal-worthy garden of yours!
Starting Wildflowers from Seed
Posted on Tuesday, August 24, 2021 · Leave a Comment
I recently visited the Nasami Farm in Whately, MA. This is the plant production facility for the Native Plants Trust, formerly the New England Wildflower Society. I met with Alexis Doshas, their nursery manager. The 75–acre farm produces perennials, grasses and some woody plants – mainly from seed. The plants are sold at their headquarters in Framingham, MA, and at the Nasami Farm on weekends.
Nasami Farm produces many species of wildflower trees and shrubs from seeds
If you are interested in growing wildflowers, the least expensive way to get plenty is to start them from seed. This takes some effort, but it accomplishes a number of things: if you collect seed from the wild, you are getting plants in your garden without diminishing the wild population – the way you would if you dug plants (which is prohibited anyway in most places).
Starting plants from seed also encourages genetic diversity. Many purchased plants are propagated from cuttings or by division, which means they are all clones with the exact same genes. Seeds from any given plant produce seedlings with a wide range of characteristics, making some less susceptible to environmental challenges such as global warming.
Remove the fuzzy bits to separate seeds before planting
Starting wildflowers from seed can take patience. While some seeds will germinate and grow the same summer you collect them (Campanulas, for example), other things like lilies might take 4 or 5 years to bloom. Many require a cold period of 3 months, which is called cold stratification. Some planted now will grow underground next spring, but not send up any green growth until the following spring.
The Nasami Farm grows seedlings in big plastic hoop houses. These are not heated except in spring, or if temperatures go below zero in winter. The greenhouses allow the seedlings to be monitored and tended easily on long tables. You could set up a table in your barn, shed or garage for a few flats of seedlings. Some wildflowers will do fine in flats with good drainage in the outdoors – preferably in a shady place that won’t see too much of the hot, drying sun.
Flats of wildflowers at Nasami Farm
Lastly, you can plant seeds directly in the ground in a site where they will thrive as mature plants. The disadvantage to this is that you never know what percentage of seeds will germinate. If you plant 100 seeds in a flat indoors it will be easier to thin or transplant the seedlings than if you must do so on your hands and knees. And there should be no weed competition if you are using a germination mix in a flat. On the other hand, I plant things like golden seal directly in the ground as it takes 2 years to sprout, and I don’t want to have to water and tend them so long.
Alexis Doshas gave me some tips for success when starting wildflowers from seed. First, she said, collect seed when it is easy to pull off the plant, and remove any fluffy stuff attached to it. Generally seeds start light colored, and darken when fully ripe. If you want to store seed, make sure it doesn’t dry out. Store in a cool, dark place.
Buy a very fine seed germination mix, something made of finely ground peat and perlite. A coarse mix can let seeds wash down deeper than they should be. For small seeds (the size of a grain of sand or less) just sow seeds, pat them into the soil mix and water them in. No need to cover them. Alexis suggests germinating seeds at 60 to 80 degrees, but also cautioned that many wildflowers need a 90-day cold period before they will grow.
Alexis said you may need to provide rodent protection: metal hardware cloth over the flats to keep mice from eating the seeds. Rodents can be a problem as easily in your cold basement as in a barn or outdoors.
I asked Alexis to recommend some plants that would be easy to start from seed right now. She suggested blueberries, huckleberries and plums for fruits. Of the flowers, she listed these: milkweed, mountain mint, black-eyed Susans, wild bee balm, wild iris, asters, Joe Pye weed and all the goldenrods, which are great for pollinators.
Woodland wildflowers, she said, often have very specific needs and are not as easy to grow as the field flowers mentioned above. Soil pH and type are important. When I plant spring wildflowers I try to mimic the forest type of their native habitat: if they grow in a maple-beech-ash forest in the wild, I try to plant them in a similar environment.
Golden seal fruits are ready for picking in my woods right now
Plants with large, fleshy fruits such as Jack-in-the pulpit or golden seal probably will require you to remove the fruit portion before planting. Gloves are suggested, as some have strong chemicals that may irritate your skin. You can soak seeds like that to allow fermentation to remove the skin and flesh.
A good reference text for anyone interested in starting wildflower seeds is by William Cullina, Growing and Propagating Wildflowers of the United States and Canada. Unfortunately, it is out of print, though I’ve heard it is in the process of being reprinted. It is worth its weight in gold as it gives specifics for each of hundreds of wildflowers.
So try collecting some seeds, and schedule a visit to Nasami Farm or the Garden in the Woods.
Henry is the author of 4
gardening books. He lives and writes in Cornish Flat, NH. His web site ids
www.Gardening-guy.com.
Bedrock Gardens in Lee, New Hampshire is Well Worth a Visit
Posted on Tuesday, August 17, 2021 · Leave a Comment
I recently visited Bedrock Garden in Lee, NH and came away feeling refreshed and enlightened. This 37-acre public garden was created on the premises of a 1700’s farm that was purchased in 1980 by artist and garden designer Jill Nooney and her husband, Bob Munger.
Gardens and sculpture go well together
Jill Nooney is a talented designer, who has won many awards at the Boston Flower Show. She is a welder who uses her skills to create metal sculptures from small to mammoth, as well as working with other media. Bob is a natural builder and fix-it guy who has enabled Jill to install her art in the landscape, along with water features, walls, paths and much more. They are a couple who really bring out the best in each other.
When I toured the gardens I was lucky to have had Jill as one of my guides. Also touring the gardens with me was John Forti, Executive Director and Horticulturist of the non-profit that manages the gardens. We spent nearly three hours together looking at the gardens and I learned about many plants I had never seen before.
Bedrock Garden is full of surprises that delight, enlighten and inspire visitors. I came away wishing I had a bigger garden space for my own efforts, and an appreciation for how much Jill and Bob have packed into their gardens.
The Log Jam is something anyone could do
For years Bedrock Garden was open a few weekends each summer, but five years ago Jill and Bob decided that since they were approaching what some call “retirement age”, that they needed to look seriously at the future of the gardens. They created a non-profit, hired John Forti as the director, and figured out how to separate the public and private spaces.
During the pandemic they created a parking lot and visitors center that are accessed away from their home, the old farm house they have lived in for over 40 years. They have created a space that is family-friendly that delights children as much as their parents.
This gnome house near the parking area alerts children that they are welcome
Near the parking lot is a gnome house kids can enter made from a huge hollow sycamore log that Jill capped with a steel roof reminiscent of mushroom cap. She saw the wonderful hollow log alongside the road and hit her brakes immediately to ask for it. Luckily, she was the first to ask, and got it. (Five others stopped and asked for it that day, she told me, but she was the first).
I consider myself well exposed to the palette of plants available to gardeners in New Hampshire. Bedrock Garden is in Zone 5b, meaning that most years it does not get colder than minus 25 degrees Fahrenheit. But Jill has installed and grown many plants that I have never seen before, including many woody plants normally found in Japan or China.
Jill Nooney has used plants in ways that surprised me. So for example, she used ‘Bulls Blood’ heritage beets in a flower bed for their deep purple leaves. An annual effort, but very striking. When a hollow tree was cut down, she had Bob cut it in two-foot sections and stack the sections between two trees so viewers walking by could see through it like binoculars. One can see where branches had been swallowed by its growth. They call it “Log Jam.”
Decorative Miscanthus grass makes a statement in full sun
Jill has used decorative grasses well throughout the garden. Fountain grass (Miscanthus spp.) is a genus of grass that gets to be more than six feet tall and very bushy in full sun, where she grows it in an “allee” arrangement that is gorgeous. But she also uses it in shade. “It’s wispy in the shade”, she said,” I like that.”
Metal sculpture is a key element throughout the garden. Early in our tour I admired a space made by forming ¾-inch steel rebar into a series of 11 arches 13-feet tall and spaced 7 feet apart. “I’m using the sky,” she said. She consciously mimicked the lines of a Gothic cathedral, bending each steel frame to a gracefully pointed Gothic arch. And she is growing European fastigate beeches to clothe the metal frame as part of the installation: one on each side of the archways and tied to the steel. They will eventually reach the sky – the apex of the arch.
A steel chiwara or stylized antelope mask in the garden
Also in the garden are two iron “Chiwaras” modeled after antelope masks made by the Bambara people of Mali. Many years ago I had told Jill the legend of the antelope in Mali, where I had worked with the Peace Corps. The Bambara people credit the antelope for teaching them to plant millet, their primary grain. The antelope pawed the ground, and dropped a little manure into the soil containing seeds. So they honored the antelope with their stylized masks, which Jill captured beautifully.
So plan a visit to Bedrock
Garden if you can. There is a guided tour each day, and two on weekend days. Or just wander around and study the design elements – see how Jill has used plants that awe and inspire, and how she has added whimsy and art that delights and amuses. This is a
garden worth visiting even if you don’t have a big space or the energy to develop it the way Jill and Bob have. Bring a lunch and plan on spending the day. You’ll be glad you did. And if you have children in your life, think about attending the Fairy Hobbit House Festival October 9 to 11. Learn more at
www.bedrockgardens.org.
You may write Henry at PO Box 364, Cornish Flat, NH 03746, or e-mail him at
henry.homeyer@comcast.net. Please include a SASE if you want a response by mail.
On Becoming a Plant Collector
Posted on Wednesday, August 4, 2021 · Leave a Comment
I’ve always been a gardener. –or at least as far back as I can remember. More recently, say the last 20 years or so, I’ve been a plant collector. What does that mean? If I fall in love with a plant, I want to grow other plants related to it.
Collector Bill Countryman started out with one peony and eventually collected about 600 varieties
One of the most obsessive collectors I ever met was the late Bill Countryman of Northfield, Vermont. When I interviewed him in the late nineteen nineties he told me that his sister sent him a peony, and although he was in his seventies at the time and not a gardener, he planted it. It bloomed magnificently and Bill fell in love with peonies He decided to grow every type there is.
Bill Countryman bought a chain saw so he could clear his land to plant peonies. He bought a bulldozer to remove the stumps and went to work. When I met him, he had already planted some 300 kinds of peonies, though he continued on, getting more varieties – perhaps as many as 600. He sold them, but mostly he just enjoyed them. He was quite the collector.
I’m not nearly so obsessive. What do I collect? Well peonies, I suppose. But Cindy and I have only 44 peonies. Primroses. Burnets. Persicarias. Wildlflowers. Willows. I have dozens of colors of daylilies, but don’t consider myself a collector of them – they are just nice, reliable plants, but I don’t need one of every kind. Thank goodness for that- there are many hundred.
The burnets are quite a diverse group in the scientific group or genus, Sanguisorba. First I got the one native to New England, Sanguisorba canadensis. It loves wetlands, so I planted it in a weedy, marshy place in part sun/part shade. It thrived, sending flower spikes with bottlebrush flowers 6-feet tall or more. It blooms in late summer or fall, and can still be pretty in late October.
Lilac Squirrel Sanguisorba blossoms are delightful to touch and see
My absolute favorite of these flowers is one called Sanguisorba hakusenensis ‘Lilac Squirrel’. I saw it on-line, and asked all my local garden centers to no avail, so I finally ordered it from Digging Dog Nursery in California. I planted five small plants last year, they wintered over, and are blooming now. The flowers are like pink squirrel tails hanging down from 18-inch flower stems. They make me smile, especially with a name like that.
The littlest of the burnets I grow is one called S. officinalis ‘Little Angel’. It makes a tidy clump of diminutive green leaves edged in white. Each leaf is just half on inch long. The deep red catkin-like flowers are on 6-inch stems that lean or fall over. Now, five years since I bought it, the clump is about a foot across and just 3 inches tall.
Little Angel is dwarfed by its larger relatives
Little Angel’s bigger cousin in the same genus is one called ‘Tanna’. This is called a miniature, but that is only relative to some of the bigger ones that get 4- to 6-feet tall. It has very tidy 18-inch leaf stems, each with 13 to 17 leaflets in dark green. It makes a tidy mound and has the same dark-red smallish flowers.
Of the large ones that are garden worthy, I have two: probably S. obtusa and S. tenuifolia. The literature, even on-line, is sketchy about identifying these plants and I lost the plant tags long ago. The first, which has reddish-pink tidy small catkin-like flowers needs to be tied up early in July. If not tied up, the flower stems, which get to be over 4-feet long and have 20 or so blossoms per stem, flop over. The other is standing tall and proud right now, but the flowers have not yet opened – and I haven’t staked them.
Why do I collect burnets? I just like them. They can be picked for flower arrangements, but I rarely do. I like seeing them in the garden.
I have dozens of daylilies but don’t consider myself a collector of them
Willows, of course, are more of a problem to collect because of their size, but I do grow at least half a dozen. My favorite is the Salix integra ‘Hakuro nishiki’. It has variegated foliage early in the summer – green and white, and then with pink mixed in for a few weeks. It is colorful and fast growing. Like all willows, it appreciates moist soils but will grow in ordinary garden soil.
‘Hakuro nishiki’ is not a large willow. It seems to top out at about 20 feet in 10 years. I planted three some 20 years ago, ten feet apart, and they created a dense grove. I was able to prune out branches growing into the center, creating a small room where I placed Adirondack chairs. It makes a cool space near my brook to eat lunch on a hot day.
Hakuro Nishiki willows have tri-colored leaves in early summer
The rosemary willow ( Salix eleagnos) is another favorite of mine. It is a small willow, only getting to be about 10 feet tall and wide in 10 years. I love that its leaves look somewhat like leaves of the herb rosemary: narrow and pointy leaves. They are dark green on the top side, gray or silvery on the bottom side. I’ve almost been able to fool people visiting my garden into believing it was really a rosemary plant on steroids– but for the lack of smell. Neither the rosemary or Hakuro nishiki produce any noticeable flowers.
So I encourage you to look for – and collect – plants related to the ones you love. Not every variety will tickle your fancy, but if you discover a few that do, they will make you happy for years to come.
Invasives and What to Do About Them
Posted on Tuesday, July 27, 2021 · Leave a Comment
Since ancient times, explorers have brought back seeds and plants from exotic lands. Some, like the apple, have been a boon to the citizens of their adoptive home. Others, like the notorious Japanese knotweed (a.k.a. “bamboo”) have been more headache than boon.
New England, with its cold climate, is blessed with a natural defense against some invasives: our winters. But many others have settled in and are taking over – or trying to. It is up to us, the gardeners, to be responsible: we need to learn what the problem plants are, and we need to get rid of any we have growing on our property.
Invasive plants are those that reproduce rapidly and take over wild habitats, out-competing the plants that Mother Nature provided, stealing light, water and nutrients from less aggressive plants. By definition, they are alien species, plants that have come here from other countries. These plants are often very good-looking plants, but thugs.
Most invasives produce large numbers of seeds that are distributed by birds, by the wind, or by water. In most cases, invasives are also difficult to remove or eradicate once established, and have extensive root systems that preclude simply pulling them up.
Back home, in their country of origin, most invasives have predators – insects or diseases – that keep their numbers in check. They may have come inadvertently or been brought by well-intentioned people who thought they were pretty or had some use for them. Some, like burning bush, barberry and Norway maple, have been introduced and sold because they are essentially indestructible – and pretty.
For starters, you can learn to identify the prohibited species in your state, and eliminate them on your own land. Check with your local University Extension service to obtain a list for your state.
Getting rid of invasives, however, may not be easy for two reasons: you may like the invasive species, and may have planted it before you knew better. Secondly, it may not be easy to eliminate – even with the use of herbicides (which you probably don’t want to use anyhow).
‘Crimson King’ Norway maple looks great, but out-competes our native maples in the forest
The Norway maple, for example, is a lovely-looking tree that grows fast and survives well even in urban areas. It will grow in sun or partial shade and is not bothered by road salt. If you have one that is shading your house, I can understand why you might be unwilling to cut it down.
If you are a city dweller, you may assume that since there are no forests nearby, it shouldn’t matter if you keep your Norway maple (or other invasive species). But it’s not just wind or birds that distribute seeds. Runoff can carry seeds to an outlet in a natural environment. Seed from your tree can end up in streams, rivers, ponds. Thus even city dwellers can make a difference, helping to control the propagation of this invasive tree by cutting down theirs.
To see if maple trees growing wild near you are Norway maples, do this simple test: snap off a leaf at its attachment point, and look at the stem. If it oozes a milky sap, it’s a Norway maple. The leaves also tend to be broader and larger than sugar or red maple leaves.
For organic gardeners, getting rid of invasives is not easy. For herbaceous weeds, think lawnmower. Once you have the stalks (and as much of the root mass as possible removed), plant grass seed. Mow it every week and the roots will not be get recharged. Stems will continue to grow for years, but if you mow it, you can win.
There are several brands of weed wrenches that can help to pull small trees and shrubs
Digging the stump of an invasive shrub like barberry, bush honeysuckle or burning bush is a pain in the neck, but you probably can do it. Digging the stump of a large Norway maple is not practical. But there are folks with back hoes and stump grinders, and the expertise to do it.
If your woods are full of small seedlings of invasive trees or shrubs, you may wish to get a tool for pulling saplings called a weed wrench. This tool has a gripping mouth-like part, and a long handle to provide the leverage. A weed wrench of the proper size allows a 150 pound office worker to pull out shrubs and small trees that otherwise would not be possible to yank.
Why bother digging out invasives? You may decide to do it for the sake of your grandchildren, or for the environment. Even in states with good laws prohibiting the sale of invasive plants, no one can force you to cut down or pull out your invasive plants. But being a little selfish is okay, too. Think of all the great plants you can buy and plant if you get rid of those invasives. And think how wonderful it would be if wildflowers and native plants started flourishing in your woods.
Henry Homeyer is an organic
gardener and longtime UNH Master
Gardener. Reach him at
henry.homeyer@comcast.net or PO Box 364, Cornish Flat, NH 03746.
Mulch Can Help Keep Down Weeds
Posted on Tuesday, July 20, 2021 · Leave a Comment
Little or no mulch is needed in a mature garden bed with plants growing shoulder to shoulder
Mulch is commonly used to help suppress weeds and to hold in soil moisture in dry times. There are many different kinds of mulch and it is important to get the right kind, and to apply it properly if you wish to get the benefits of mulch.
The most commonly used type in flower and shrub borders is sold as bark mulch. It is sold in bags, or by the scoop at garden centers to people who have access to pickup trucks. Bulk mulch is less expensive than bagged mulch if you have a truck, or can borrow one from you brother-in-law.
I’m an organic gardener, so I avoid the orange and black mulches. Read the bag before you buy any to see what is in it. According to a report from the University of Massachusetts, the dyes themselves are probably not toxic, but the wood is usually recycled wood from pallets, old decks and scrap. Those sources are dry and accept dye more easily than fresh bark or chipped branches. Recycled pressure treated wood, if older stuff, may contain arsenic; pallets may have been exposed to spilled toxins.
I often see deep layers of mulch to keep weeds down. However, a layer 4 inches deep will also keep a short rain shower from getting to the soil and your plants. I use an inch or two of mulch, maximum. Yes, some aggressive weeds will poke through a thin layer of mulch, so I try to do a good weeding first.
Chopped leaves are wonderful mulch. Last fall we raked up our leaves and stored them outdoors in a pile. This summer we ran that pile through a chipper/shredder and turned it into a fine product we use as mulch. You can also use your mower to chop fall leaves before raking them. I have friends who store the chopped leaves in bags in the barn until needed. Chopped leaves rarely blow away after they have been rained on.
This new bed needs mulch to keep down weeds and hold in moisture
In addition to weed suppression, a layer of mulch keeps soils from drying out quickly in the hot summer sun. Essentially, it shades the soil, keeping it moist and cool. In the spring I do not mulch my vegetable garden until after soil temperatures have reached their summer level – say 60 degrees or more.
In May, I want the sun to heat up the soil as my plants need warm soil to grow in, and seeds need warm soil to germinate. And yes, that means weed seeds will germinate, too. But weeding or hoeing the early weeds is not bad and goes quickly – just be sure to get the weeds before they get too big.
Mulch gets broken down over time by soil microbes. That is a good thing – wood chips or leaves that break down add organic matter to your soil and encourage earthworms to aerate the soil and add their castings to the soil, and they are rich in minerals –
Some gardeners tell me that they worry about soil microbes using up nitrogen in the soil as they breakdown mulch. A nitrogen-starved plant has yellowish leaves, not dark green leaves. But I doubt that you‘ve seen that occur, even in flower beds with plenty of mulch. If it has been a problem, or you worry it will occur, apply some slow-release organic fertilizer on the soil surface before mulching.
In the vegetable garden I mulch with straw or hay. Straw is sold as seed-free and is often grown and cut before seeds are formed. Nonetheless, straw often does have seeds, much to the dismay of gardeners who have paid a premium price for it. Buy it from a source you trust!
Hay is just grass grown for animal feed that has gotten wet after cutting. Those pampered cows or horses won’t eat it, so it is sold as mulch for a few bucks a bale.
Newspaper around tomato plants will be covered with straw
I always lay down two to four layers of newspaper on the ground before applying hay or straw. This accomplishes two things: it keeps light away from any weeds that germinate even with a layer of hay, and it slowly breaks down and adds more organic matter to the soil.
In the old days newspapers used dyes with heavy metals, including lead. But now inks are made with soy products and are said to be non-toxic, or at least free of heavy metals. The newspaper itself is made from cellulose derived from trees, though some chemicals are used in producing the paper.
Black plastic will keep weeds from germinating, but it breaks down and goes into the landfill. It’s also ugly, and I avoid it. There are various “landscape fabrics” to put under mulch that do help, though pernicious weeds can grow through some kinds. The woven kind is more susceptible to that.
What about papers that have been through a shredder? I don’t find them easy to use or aesthetically pleasing. What about coffee grounds? These are quite acidic, and if you collect them at your local coffee shop, use them only for acid-loving plants like blueberries, hollies or azaleas.
I use no mulch in my mature flower beds. By letting perennials mature and spread, they will choke out almost any weeds, except perhaps in early spring. But by now, they shade out all but the most difficult of weeds.
Is It Time to Grow Up? Vines Offer Special Features
Posted on Tuesday, July 13, 2021 · Leave a Comment
The story of Jack, of Bean Stalk fame, appealed to me as a boy, and still does. I love climbing vines and grow many including those that are perennial or annual flowers, and some vegetables. Vines are a great way to save space and to get blossoms up and visible.
A cucumber trellis is easy to build
In the vegetable garden I have had great luck growing cucumbers on trellises. I made a simple frame to support my cukes, and you can, too. You can use 4 six-foot long 2-by-2 pieces of lumber for the framework. Attach them in pairs with simple gate hinges from the hardware store. Then space them five-feet apart with pieces of strapping at the top and bottom, and attach chicken wire for the vines to grab onto.
I used a cordless drill and short sheet rock screws to put it all together. I made it sturdier by cutting short pieces of strapping to go from the front legs to the back legs. To ensure it doesn’t blow over, I drove in a hardwood grade stake into the ground on each end, and screwed it to that strapping. Once the vines are long enough, lift them up onto the chicken wire, and they will quickly attach to it and grow up.
Other vines will grow up on trellises, too, including squashes and gourds of all sorts. For heavier fruits you may want to build your trellis with two-by-fours, and perhaps to use stronger wire mesh or the stuff used to reinforce concrete that comes in 4-foot by 8-foot pieces.
If you have only grown bush beans, you should also try pole beans. As the name implies, these will encircle a pole and grow up 8-feet or more. The great thing about them is that if you keep on picking them, they will produce beans all summer. Bush beans produce just one load of beans over a 3-week period, and then they are done.
Beans fix nitrogen, taking it from the air and storing it in useable form in nodes in the roots, but only if the soil has a certain bacteria to work with your beans. You can buy ‘inoculant’ to make sure your beans do fix nitrogen, and can add some to the soil and water it in, even now.
Climbing hydrangea covers the north side of my barn and looks good all year
Climbing hydrangea is a perennial woody vine that looks good all year. It is slow to get started, but once established (after a few years) it grows quickly. It does well on the shady north side of a building, a place often difficult for flowers. It will attach to brick or stone, but needs to be attached to a wood building, either with a trellis or individual ties. It blooms in June, but the large white panicles look good long after, even into winter.
There are many types of clematis but all have wonderful blossoms, some 6-inches wide or more, others small but profuse. Most will grow 6 to 10-feet tall; some die back to the ground each year, others have woody vines that send out new shoots and flowers each year. The key to success is to give the vines plenty of sunshine, but to protect the roots with shade from other plants to keep them cool. There are spring, summer and fall bloomers. Some are fragrant, others not.
This fall-blooming clematis had hundreds of blossoms
If you have lived in a warmer part of the country you may long for wisteria, a woody vine that blooms profusely with blue or purple flowers, and occasionally in shades of pink and white. Each blossom is actually a cluster of blossoms that hang down like a cluster of grapes. Although most wisteria varieties will survive our winters, most bloom on “old wood” and the flower buds get killed in winter.
I grow two varieties that do bloom in Zone 4 because they bloom on “new wood”, or this year’s growth. One is called ‘Blue Moon’, a hybrid developed in Minnesota. The other is ‘Amethyst Falls’, a native variety with smaller leaves and blossoms. Both bloom for me in late June or early July, and re-bloom lightly throughout the summer.
Annual vines are vigorous and delightful, too. We generally grow morning glories from seed. These come in many colors: reds, pinks, blue, purple and white. My favorite is called Grampa Ott. It is a deep purple, and can grow up to 15 feet in a season. It was one of two heritage plants that inspired the creation of the Seed Saver organization and seed company. They grow quickly so it’s not too late to plant some by seed.
Two decorative flowering beans that I like are purple hyacinth bean and scarlet runner bean. The purple hyacinth bean is a beautiful plant: the leaves are purple, along with the flowers and seed pods. It is slow to germinate and get up a pole or trellis, so it is best started in pots indoors before it can be planted outdoors. The young beans are edible raw or cooked, but the mature pods has seeds better used as dry beans.
Scarlet runner beans, like the hyacinth bean, can climb up a support and grow 10-feet in a season. They are quicker to grow than hyacinth beans, and I often start them in the soil near my hexagon cedar shade structure where I also grow wisteria. The bean has bright orange flowers and standard bean leaves. Plant 4 to 6 seeds around a pole and watch them grow- just like Jack, the bean stalk kid.
Mid-Summer Blossoms
Posted on Tuesday, July 6, 2021 · Leave a Comment
Mid-summer is often a quiet time for flowers – many gardens have fewer dramatic blossoms than in the spring. I have made an effort to have plenty blooming now. It’s true that my Japanese primroses, peonies and Siberian iris have gone by. But I have many others, both old favorites and lesser-known beauties.
Beebalm ( Monarda didyma) has started early this year for me. Contrary to what most gardening books say, beebalm does not need full sun. In fact, full sun makes it dry out and go by more quickly. It does well in moist, rich soil but will grow anywhere. This year I planted some wild beebalm, a native prairie plant. Its scientific name is Monarda fistulosa, and some better garden centers are selling it now- even though it is not as flashy as its domesticated cousin. It’s a light lavender in color, and shorter than the standard varieties. It is terrific for butterflies and bees.
Campanula glomerata spreads by root but it is not a thug
Just finishing up for me is one of the bellflowers, clustered bellflower or Campanula glomerata. It stands about 24 inches tall with purplish-blue globes of small blossoms. It is a fast spreader, but pulls easily if it gets out of its place. A relative, peach-leaved bellflower ( C. persicifolia) is preferred by some, as it is better behaved. It has flowers growing up its tall stems, and comes in blue or white. Both species are good cut flowers.
Feverfew ( Tanacetum parthenium) has been used traditionally to cure many things, but I like it as a white cut flower with a yellow center. Each blossom is small – say half an inch – but there can be hundreds on a big plant. It is rambunctious. It sows seeds and shows up around my garden, but it is easily pulled. It keeps well in an arrangement.
Betony humelo is a good cut flower
Betony (Stachys officinalis) is in bloom now, too. It is in the same genus as lamb’s ears, but has green, not silvery leaves, and sends up lovely purplish flowers on stiff stalks that look great in a vase. The best variety is one called ‘Hummelo’, named after the Dutch hometown of Piet Oudolf, designer of the High Line Gardens in NYC. But Hummel means bumblebee in German, which is appropriate – it attracts bees over its long bloom time. Small flowers appear all along its tall stems.
An uncommon flower in bloom for me now is called false hydrangea (Deinanthe caerulea) because the leaves are similar to those of the PeeGee hydrangea, although the flowers are totally different. This gem grows in full to part shade in moist, rich soil. It has small bluish-lavender cup-shaped flowers.
False hydrangea comes in blue or white blossoms
There is another false hydrangea, Deinanthe bifida, which has white flowers. Both are rated as hardy to Zone 5. I am in Zone 4 and have lost some plants, but others have survived.
A huge, dramatic plant is giant fleece flower (Persicaria polymorpha ). The blooms of this giant are a bit like astillbe flowers on steroids. The hollow stems stand up to 8 feet tall, and flower panicles are sometimes 18 inches from top to bottom. It does not spread by root, but each year the clump gets larger. I just cut back a good portion of mine, as the plant was shading out nearby plants. It would take a pickax and a strong back to dig it up – which I have, on one occasion. It likes moist soil and full sun,
Japanese iris love wet places to grow
Moist soil is also good for Japanese iris (Iris ensata). In fact, it is often grown in shallow water. I have one clump which has just begun blooming – after all the others. Its foliage is similar to Siberian iris, but the “falls” or petals lie back flat, looking up. It does not like the competition of weeds, I have learned, as we weeded it well early on, and it is going to bloom dramatically this year.
Great masterwort ( Astrantia major ) has small domed blossoms in white or pinky-purple that look like pins stuck in a small pincushion, surrounded by delicate bracts (petal-like structures). Deer won’t eat it, and it blooms for weeks, preferably in moist, sunny locations. Each year my clumps get bigger and more wonderful.
At the front of a prominent flower bed I have installed lady’s mantle (Alchemilla mollis ), a tidy plant with lacy clusters of chartreuse flowers, a color that accents others nicely in a vase, or in the garden. It is probably best known for its tidy foliage which traps rain drops or dew and shows them off. It works as a ground cover, spreading a bit each year and providing dense foliage that helps reduce weeds. It will grow in full sun or light shade, but does not thrive in hot, dry soil.
In addition to perennials, each year I grow some annuals. Last year we started many dahlia tubers for their big, colorful blossoms, and saved the tubers indoors to reuse this year, and to share with others.
This year we bought some canna lilies for their interesting foliage – one variety has deep purple leaves – and bright orange or yellow flowers. They stand from two to six feet tall, and have been blooming consistently for a month so far.
If your garden is a bit short of flowers just now, try some of those mentioned above. There is always space for a few more flowers.
You may reach Henry at PO Box 364, Cornish Flat, NH 03746 or by e-mail at
henry.homeyer@comcast.net. He is the author of 4
gardening books.