As an avid bromeliad collector back in the 1970s, I’ve had a long fascination with members of the bromeliad family. Although, I’m long past my house plant days, I continue to test bromeliads from cold climates for their adaptability in our Zone 7b NC garden. So far, we’ve had one member of the genus Puya to survive for well over a decade, so we’re trying more. Here is our trial clump of Puya caerulea var. violacea this week, where it is thriving so far in the crevice garden. This 2.5 year old plant is just waiting for a really cold winter to see how it fares, but so far, so good.
One of our favorite of the US native (Central Texas) desert ferns is Pellaea ovata. Here is our clump in the crevice garden looking quite nice this week. This is scheduled to return to the Plant Delights catalog in January. Hardiness should be at least Zone 7b and south.
Try as we might, we have been epic failures trying to grow the showy southwest native Zauschneria (now epilobium) in our garden, due to the combination of high humidity and torrential summer rainfalls. No matter where we tried them in the rock garden, they quickly expired. That was in the years BC…before crevice. Here is our plant of Zauschneria canum var. arizonica ‘Sky Island Orange’, a David Salman selection, planted in early 2018 and still thriving in our urbanite crevice garden. Not bad for a plant that doesn’t grow here.
We admit to a long-standing case of buckwheat envy. Every visit to the worlds great rock gardens, such as the Denver Botanic Garden, leave us lusting to grow the rock garden genus, eriogonum. We’ve killed many members of the genus, since they truly hate our humid and wet summers. Even our crevice garden was no help in keeping these alive, even including our reportedly easy-to-grow Appalachian native, Eriogonum allenii. After almost giving up several times, we can finally declare success with the Texas native Eriogonum longifolium, from our East Texas botanizing expedition. Here’s our clump in full flower, and quite happy in one of the rock garden sections. Granted, it’s not as stunning as some of the species that thrive in Denver, but hey, we can now check that genus off the list.
Looking good this week is Nierembergia ‘Starry Eyes’. We have special memories watching our friend Carl Schoenfeld collect cuttings of this on our 2002 botanizing trip to Argentina. While it’s only reliably winter hardy to Zone 8, it’s a flowering machine during the summer. Here it is growing in our new crevice planting near our Open House welcome tent.
After a long spring/early summer flowering season, we’re now enjoying the seed head of Clematis hexapetala ‘Mongolian Snowflakes’. Here it is growing in our fully sun, gravelly crevice garden.
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.
Most keen botanist are familiar with the late French botanist, Andre’ Michaux (1746-1802). Michaux was a pioneer in botanizing North America, but how many people have actually grown the plant genus named in his honor. Michauxia is a genus of seven species, sister to campanulas, that hail from the Mediterranean though much of the Middle-East. We are fortunate to have his namesake, Michauxia campanuloides in flower this week for the first time, where it is thriving in the crevice garden.
To identify plants that are new to us, we start with the time-tested step of determining how close plants look to relatives we already know. This comes first, before we dive into floral dissection, etc. In most cases, we can get pretty close to a correct id, since we’ve grown and seen such a large number of plants. Two plants that threw us completely off the trail when we first saw them, are flowering now in the crevice garden here at JLBG.
The first, below, is Digitalis obscura, the Spanish Foxglove. I’d have lost big had I wagered on its identity when I first saw this, since I would have bet the farm that it was a penstemon, since the flowers and foliage share such an amazing resemblance to that genus. It’s taken us years to find a spot well-drained enough for this to survive in our rainy, humid, climate, but the wait was worth it.
The second plant that doesn’t seem to fit its genus is also flowering now in the crevice garden…Penstemon ambiguous. This Southwest/Great Basin native, known as sand beardtongue, looks nothing like other members of the penstemon family, which are usually easily recognizable at first glance. Instead, it could easily be mistaken for a phlox. This is our third year for this gem, so perhaps this may appear in our nursery offerings one day.
Most people are in too much of a hurry when they visit gardens and subsequently miss so many of the tiny gems in the garden. Here our clump of the South African native Ledebouria inquinata that was in full flower in the crevice garden during our recent spring open house. I wonder how many people actually walked slow enough to notice this tiny gem and its massive floral show. How about a “slow gardening” movement?