FEW GARDENERS would dispute the fact that garden Phlox is a worthy addition to the summer landscape, and nectar-seeking butterflies (like the American painted lady, above) emphatically agree. But which varieties among the many offered at nurseries and catalogs do the best job of both adding beauty and supporting beneficial insects?
George Coombs managed the Trial Gardens at Mt. Cuba Center native plant garden and research facility in Delaware. In past conversations, George–who in 2019 was promoted to Mt. Cuba’s Director of Horticulture–has helped me make our way through the daunting selections of Heuchera, Monarda, and Baptisia. George and the trial garden team spent three years evaluating 94 different sun-loving selections of Phlox for eye and butterfly appeal and mildew resistance, plus 43 shade-garden choices, too.
Read along as you listen to the February 26, 2018 edition of my public-radio show and podcast using the player below. You can subscribe to all future editions on iTunes or Stitcher (and browse my archive of podcasts here).
phlox q&a with george coombs
Q. Whenever one of your reports arrives I feel very lucky to get it, because it’s such a good read all the time. Do you write them—do you write up the summary report? They’re great.
A. I do write them, yes. They’re a lot of work but they always turn out really well.
Q. It’s like a whole reference book. They’re wonderful (and people can read them online). I have to confess George, I didn’t even know that the genus Phlox had so many species in it. I only knew the ones we commonly use in gardens. Tell us just a little bit about the genus and how you decided what to focus on.
A. Yes. Well the main reason we wanted to trial Phlox was really to look at Phlox paniculata,
The website greengrove.cc is an aggregator of news from open sources. The source is indicated at the beginning and at the end of the announcement. You can send a complaint on the news if you find it unreliable.
As native grasses such as little bluestem (Schizachyrium scoparium and cvs., Zones 3–9) and prairie dropseed (Sporobolus heterolepis and cvs., Zones 3–9) increasingly gain traction in gardens, exotics such as miscanthus (Miscanthus sinensis and cvs., Zones 4–9) are losing favor because of their invasive tendencies. But not all exotic grasses are troublesome and need to be avoided. Feather reed grass (Calamagrostis × acutiflora and cvs., Zones 5–9) is a natural hybrid of C. arundinacea and C. epigejos, which are both nonnatives and prolific self-sowers, but the hybrid rarely sets fertile seed—a major plus for an exotic grass, right? So why are other reed grasses—‘Karl Foerster’ aside—so underused? To answer that question is to understand the phenomenon of ‘Karl Foerster’ feather reed grass (C. × acutiflora ‘Karl Foerster’).
Peace is not just the absence of war it can be a reflection of a personal inner tranquility. To many gardeners peace may be a state of harmony with nature. It is a theme of several ‘hard landscape’ projects and sculptural works as shown by the selection of Peace gardens below.
No other plant native to South Carolina has such fragrant and beautiful spring blooms and stunning fall color as the witch-alders. Fothergilla was named after Dr. John Fothergill, an English physician and gardener who funded the travels of John Bartram through the Carolinas in the 1700’s. These beautiful shrubs have been planted in both American and English gardens for over 200 years, including gardens of George Washington and Thomas Jefferson.
Many of our tried and true recipes and dishes can be ‘modified’ to increase vegetables, fiber, and fruits by making simple adjustments to meals we already eat. Many of us love watching chefs on TV but tend to go back to old favorites, i.e., macaroni and cheese, potato salad, beef stew, soup, fried chicken, broccoli casserole, spaghetti, etc.
If you said Heuchera, you’re right. Perhaps you’re going to reshuffle some shady beds this spring, and know that Heuchera, with their great foliage, can help make garden pictures work–but wonder which ones, and how best to use them. I invited George Coombs, trial garden manager at the must-visit Mt. Cuba Center in Delaware, with 50 acres of native-plant display gardens and 500 acres of natural land, back to the radio show to help make the best choices and grow them to perfection.George knows from Heuchera, having trialed 83 varieties side by side (the exhaustive results are in this pdf). “I say to people, ‘I’m doing Consumer Reports for plants,'” he explains. Though there are countless varieties on the market, many are duplicative in appearance or just not distinctive. “I can honestly say that when it
Decades ago, I inherited the big old Clivia plant that had inhabited the sunroom of the home I grew up in for years before that. All these eons later we still live together, Clivia and I, as we have at several locations in between, though now there are multiple plants, each a division and each monstrously bigger than the one I started with.And then maybe 15 years ago I bought a yellow-flowered Clivia [above] at a botanical garden plant auction, and last year a young plant of a Clivia species unknown to me arrived in the mail as a gift from friends….so you get the idea. I like clivias. A lot.Alan Petravich, who a
Four Winds Growers was founded around the idea of developing and promoting dwarf varieties of citrus to fit the scale of the new-home boom in post-war California and beyond–including on all those patios, and also in pots as the container-gardening trend began to take hold. Four Winds remains a family business, and a multi-generational one. It was taken over by the founder’s son, who ran it from the early 1950s until recently, when his son took charge, along with his daughter; her husband, and a grandson.In his own home garden, Four Winds marketing director Ed Laivo has potted citrus that he has been growing for “upwards of 25 or even 30 years.” He joined me on the radio and podcast to share his tips on container growing and pest control. (The transcript of the Nov. 3, 2014 show is below.)citrus-growing q&a with e
In the early 1990s, when I was working on a book called “The Natural Habitat Garden” with my friend Ken Druse, we traveled the country interviewing native-plant enthusiasts and photographing their gardens. One memorable stop was the home of Mrs. Lammot du Pont Copeland, outside Wilmington, which today is the botanic garden called Mt. Cuba Center, with more than 50 acres of display gardens on more than 500 acres of natural land.I’d never seen native terrestrial orchids before, or the vivid red and yellow wildflower called Spigelia marilandica anywhere, and that day I learned that some discerning and forward-thinking experts such as Mt. Cuba’s first horticulture director, the great Dick Lighty, were already busy selecting “better” forms of native plants for garden use–a trend that has accelerated and become one of the hottest areas of contemp
Read along as you listen to the June 26, 2107 edition of my public-radio show and podcast using the player below. You can subscribe to all future editions on iTunes or Stitcher (and browse my archive of podcasts here).evaluating monarda with george coombs of mt. cubaQ. We’ve talked before on the show about your past trials of other native plants like Baptisia and Heuchera—and native plants are the mission of Mt. Cuba, which is both a garden for visiting and a research center, right?A. Mt. Cuba Center is actually a former du Pont family estate, the Copeland family estate, and they left their estate to become a public garden. What kind of sets us apart from others in the area is that we focus on native plants. We broadly define our nativity region as the Eastern United States.We do a lot of work promoting plants in a display capacity in the gardens itself, and then we also do research like what I do, trying to help
That’s Lee with his trusty scythe, above, which doesn’t figure into composting, but into how he cuts his meadow-like fields. Impressive, and mesmerizing! I’ve included a couple of his great how-to videos on composting and no-till soil preparation, along with links to the audio of our entire conversation.I was especially excited to visit Lee Reich’s New Paltz, New York, “farmden”–that’s half garden, half farm–since it’s fruit harvest time. Lee is a longtime friend and author of many exceptional garden books, including “Grow Fruit Naturally” and “Weedless Gardening,” and “The Pruning Book,” among others.Read the show notes from our discussion on the October 21,