I’ve adored the perennial Lychnis coronaria (Rose Campion), since I first saw it in my grandmothers city courtyard 60 years ago, but the darn thing just produces far too many seed, which results in far too many seedlings. Imagine my joy at finding a sterile counterpart on my 2020 trip to the UK at the amazing nursery of plantsman Bob Brown.
Lychnis ‘Hill Grounds’ is actually a hybrid of Lychnis flos-jovis and Lychnis coronaria, discovered at the Hill Grounds garden of the UK’s Janet Cropley. In appearance, it’s a dead ringer for Lychnis coronaria with its lovely fuzzy silver rosettes and spikes of tacky fluroescent pink flowers, but without those pesky seed. We look forward to getting this propagated so we can share far and wide. Below are our 2 year old plants. Winter hardiness should be Zone 3-8.
Salvia regla ‘Jame’ (pronounced Haam-hey) is looking so wonderful this time of year. This amazing North American native (US/Mexico) was originally shared back in 2000, by the late Salvia guru, Rich Dufresne. It has adorned our gardens every year since with these amazing fall shows. Hardiness is Zone 7b and warmer.
Looking lovely in the garden is week is Gossypium thurberi ‘Mt. Lemmon’…our introduction of one of the progenitors of modern day cotton. On a 2005 botanical expedition, we discovered this North American native perennial hibiscus relative, known as Desert Cotton, growing in the mountains of Arizona. In the garden, it’s a superb flowering machine for late summer and early fall. Winter hardiness is probably Zone 8a and warmer.
Hemerocallis ‘Autumn Daffodil’ was introduced in 1949, but remains one of the most incredible daylilies we grow here at JLBG. The 3′ tall, branched, sturdy, upright stems are topped with an abundance of amazing highly fragrant yellow flowers starting in July.
Our patch of Aloe cooperi has been beautiful in flower this summer, but every time I see it, my mind automatically associates it with rocker, Alice Cooper. I guess he made quite an impression on me as a child. Aloe cooperi is the hardiest of the aloes, first cousin to the better known Aloe vera. Aloe cooperi has been fine here in Zone 7b for decades, but we doubt it would be winter hardy much further north.
Pennisetum alopecuroides ‘Hush Puppy’ is a very vigorous fountain grass from the breeding program of Wayne Hanna at the University of Georgia, the result of their fountain grass sterilization program. Other introductions from this program include ‘Cayenne’, ‘Etouffee’, and ‘Jambalaya’.
In the garden Pennisetum ‘Hush Puppy’ forms a 3′ tall x 4′ wide clump that produces a succession of new plumes from early/mid-July (NC), and continuing to fall…an extended flowering season due to a lack of seed production.
Hurricane Hermine brought some much needed rain over the weekend. Not only were there some happy gardeners, but the rain lilies are loving it too. Here is a picture of Zephyranthes ‘Heart Throb’ in the garden with its bright 2″ reddish-pink flowers and contrasting white eye. At a mere 6″ this Heart Throb is a real show-stopper.
Rain lilies got their common name from their charming habit of producing new blooms after it rains. Rain lilies come in a variety of colors to coordinate with your garden’s palette. Plant rain lilies near the garden path where you can enjoy their beauty from mid summer up until fall. Be sure to come check out our wide selection of rain lilies this coming weekend, Sept. 9-11, during our fall open house, and you can take home your very own Heart Throb!
Come see our 30 foot flowering agave at our final Summer Open Nursery and Garden Days this weekend. Visitors from around the country have been showing up to see our giant agave in flower, a 16-year-old specimen of Agave salmiana x Agave asperrima, with the first flowers opening right on cue for our summer open days. This is the tallest century plant we’ve ever flowered, with the tip of the spike topping out just a few inches below the 30′ tall mark. We’ve got our giant ladder perched nearby so Jeremy can make his daily pollinations, all while fighting off attacking hummingbirds.
We hope you’ll have time to walk around the garden while you’re here. The newly-opened, full sun Souto garden is looking fabulous, with so much color it’s almost overwhelming. Changes also abound throughout the older sections of the garden. Anita has suggested the removal of several formerly fenced and hedged areas to create more openness…we think you’ll enjoy these changes as much as we do.
Daylilies You’ll Notice — Royalty in the Summer Garden
If you visit during the summer, you’ll notice some rather impressive daylilies in the sunny areas. We’ve long enjoyed daylilies for their ability to add color to the summer garden and now have them showcased better than ever.
The prevailing daylily breeding trend since the 1970s has been to shrink the height of daylilies to appeal the masses. Obviously, this worked, since Hemerocallis ‘Stella D’Oro’ can be seen lining highway medians across the country. As horticultural contrarians, however, we enjoy taller daylilies, which we feel add much more visual interest to the garden. We don’t object to a few daylilies in the 3′ range, but rarely find the shorter varieties at the top of our favorites list, although some true dwarf rock garden daylilies would be fascinating.
Hemerocallis ‘Autumn Minaret’ is certainly the best known of the taller cultivars, topping out in our garden now at 6.5′ tall…yes, you read that correctly. This 1951 late season introduction was hybridized from one of the taller natural species, Hemerocallis altissima, which is actually a very small-growing plant that just happens to have a 5′ tall flower spike.
Hemerocallis ‘Black Eyed Susan’
Hemerocallis ‘Purity’ is another summer-flowering favorite. The well-branched 5′ tall flower spikes hold hundreds of yellow-orange flowers over a very long time. We can’t imagine a summer garden without this gem. While we typically don’t rave about many daylilies that flower below 3′, there are a few noticeable exceptions. One that we continually tout as one of the best is Hemerocallis ‘Black Eyed Susan’. Without question, this amazing plant is one of the most floriferous and stunning daylilies we grow. Although it only manages 32″ in height, its show power in the garden is truly hard to match.
We’ve got many more of the taller daylilies in our trials, and have even moved a bit of pollen around this summer between some of the taller varieties, so we hope you find these “off the bell curve” daylilies worth including in your own garden.
Black Bamboo Death – The End is Nigh
Phyllostachys nigra (courtesy Georges Seguin via Wikipedia)
The bamboo world has been rocked over the last few years as most of the black bamboo has begun its flowering cycle. While flowering is good in most plants, such is not the case with bamboo since, like agaves, it dies after flowering. Like century plants, a bamboo plant also takes about 100 years to flower but unlike agaves, bamboo offsets don’t survive. Since most bamboo is grown from divisions, when a particular clone flowers, it flowers everywhere around the world within a certain time window, influenced slightly by growing conditions.
Black bamboo began flowering worldwide in 2008, with many in the US starting only in the last year. Bamboo flowers are brown and insignificant, so most folks won’t even notice until the plant begins a steady decline. The sad part is that everyone’s black bamboo will die, but the up side is that more plants will be grown from seed and the new generation crop will have another 100-year lifespan. Also, all those folks who were lied to by retailers who told them black bamboo clumped will have their problem resolved. The take home lesson is that if you’re buying the running black bamboo (Phyllostachys nigra), be sure to ask if it’s a new generation plant from seed or the clone which is currently flowering.
Yucca Birth Records Confusion — Who’s Your Daddy?
For many years we’ve had a fascination with yuccas and have long been convinced that the taxonomy of the Southeast native species was a mess. Reading several recent DNA papers along with some older works from the early 1900s, we realized that most of what is labeled Yucca filamentosa is actually Yucca flaccida…a completely different species.
We’re in the process of updating all of our names on the website and apologize in advance for the confusion. All of the variegated cultivars of Yucca filamentosa, except for the cultivar ‘Variegata’, are actually selections of Yucca flaccida.
Yucca gloriosa ‘Tiny Star’
Yucca filamentosa, however, is a real plant. The real plant is what is known in the trade as the coastal boat-tipped yucca. We are currently propagating some true Yucca filamentosa for inclusion in a future catalog. If you vacation along the East Coast from NC south to Florida, the small yucca you see on the dunes is Yucca filamentosa.
Also growing on the southeast coastal dunes are two other species, Yucca aloifolia and Yucca gloriosa. It has long been theorized that Yucca gloriosa might represent a natural hybrid between Yucca aloifolia and Yucca filamentosa and, sure enough, the new DNA work confirms that theory. Consequently, the name should be written correctly as Yucca x gloriosa. Now it makes sense that when we were studying yuccas last year on the NC dunes, many plants seemed to be intermediates between the three parent species. We guess our eyes were not deceiving us after all. Two papers on the subject were shared by Larry Hatch of Cultivar.org and are found below if you are scientifically nerdy enough to care.
On our many Southeast US botanizing trips we discovered other natural hybrids along with another new southeastern native yucca species that seems to have never been named. We will be working to get it described and published in the near future…an exciting time for those of us who love yuccas.
Perennial Plant Registrations
Our friend Larry Hatch is looking to fill a gap in the registration of new perennial varieties. There is supposed to be a system in place for anyone who wants to officially register, for posterity purposes, any new perennial that they name and introduce. While some genera of plants like iris, daylilies, and hostas have a dedicated registrar and a functioning system, most genera of plants either don’t have a registrar or the system is too cumbersome. The New Ornamentals Society is working to streamline the process with a new no-cost registration system. We encourage you to give it a try here.
Fern Hardiness Oops
Dryopteris labordei ‘Golden Mist’
In our trials from this winter, it has become obvious that one of the ferns we offer isn’t nearly as hardy as our liner supplier had indicated. We lost all plantings of Dryopteris labordei ‘Golden Mist’ at 9 degrees F this winter, which is a far cry from its purported Zone 5 hardiness. The problem stems from a taxonomic confusion. Dryopteris labordei is considered a synonym of Dryopteris indusiata, the latter of which is a Zone 5 plant. Obviously, the two plants are not the same. While it’s still a great fern, we are shifting its winter hardiness to Zone 8a-9b. If you purchased this based on our previous hardiness listing, just drop us a note and we’ll add a credit to your account or issue a refund. Please accept our apologies for this incorrect information.
Last month saw the passing of one of the giants of the waterlily world, Patrick Nutt, 85, longtime curator of Aquatic Plants at Longwood Gardens. Pat was revered throughout the water lily world for his encyclopedic knowledge and as a water lily breeder, promoter, and educator. Pat will be best remembered as the breeder of the internationally-renowned giant water lily Longwood Victoria, which most summer visitors to Longwood have no doubt gazed on in amazement. Pat began his career at Longwood Gardens in 1957 and remained there for the next 38 years, until his retirement in 1995. Even after his retirement, he continued to be a regular at Longwood Gardens while also traveling around the world, collecting and researching water lilies. Our condolences go out to Pat’s family and friends…life well lived!
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The late summer flowering crinums are just superb right now…just captured this image of Crinum ‘Stars and Stripes‘ in bloom today. Crinums are tough as nails, but really flower so much better with slightly moist soils, and lots of compost.
The rain lilies are quite incredible in the garden now as summer rains have them blooming almost constantly. Here are two images taken this week…top is Zephyranthes ‘Batik’, and the bottom is Zephyranthes ‘Rose Perfection’. Rain lilies can tolerate bone dry conditions for months, then the flowers explode 3 days after a rain shower. Flowering cannot, however, be coaxed by sprinkler irrigation…one of the great mysteries of nature.