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.
We are fascinated with the wonderful genus zephyranthes (rain lilies). Zephyranthes are unobtrusive, summer-flowering bulbs that can fit in any garden, with a flower color ranging from yellow to white to pink. The great thing about zephyranthes is the lack of large foliage that often accompanies many other spring-flowering bulbs, so site them in the front of the border, or in a rock garden to be best appreciated.
Zephyranthes are one of our specialty collections at Juniper Level Botanic Garden, with 25 species and 257 unique clones. Here are a few of the zephyranthes blooming this morning in our alpine berm. You can view our entire zephyranthes photo gallery here.
We’ve tried for years to grow Helianthemum, the European native rock rose, which is highly prized by rock gardeners. Over the last 35 years, we’ve failed miserably…until we built our crevice garden. Here, it is currently, thriving in our soil mix of 50% Permatill (popped slate).
Unless you’ve been hiding under a piece of concrete, you’ve no doubt heard of our crevice garden experiment, constructed with recycled concrete and plants planted in chipped slate (Permatill). It’s been just over three years since we started the project and just over a year since its completion. In all, the crevice garden spans 300′ linear feet and is built with 200 tons of recycled concrete. The garden has allowed us to grow a range of dryland (6-12″ of rain annually) plants that would otherwise be ungrowable in our climate which averages 45″ of rain annually.
One of many plants we’d killed several times ptc (prior to crevice) are the arilbred iris, known to iris folks as ab’s. These amazing hybrids are crosses between the dazzling middleastern desert species and bearded hybrids. Being ready to try again post crevice (pc), we sent in our order to a California iris breeder, who promptly emailed to tell us that he would not sell them to us because they were ungrowable here. It took some persuading before they agreed to send our order, but on arrival, they became some of the first plants to find a home in the new crevices. Although we’ve added more ab’s each year, the original plantings will be three years old in August. Here are a few flowers from this week.
Iris are just a few of the gems that can be found in our “cracks”, continuing below with dianthus. As we continually take note of our trial successes, more and more of those gems will find their way into our catalog and on-line offerings…as long as we can produce it in a container. Please let us know if any of these strikes your fancy.
If that’s not enough, here are some more shinning stars currently in bloom.
If any of this seems interesting, you probably should be a member of the North American Rock Garden Society…a group of similarly afflicted individuals. If you are specifically addicted to cracks, check out the nearly 2000 strong, really sick folks on Modern Crevice Gardens on Facebook
This amazing list of plants, shared by members from around the world, is truly the place to find seed of rare, hard-to-find plants for rock gardens and pretty much any kind of garden. The seed list typically offers 3000-4000 different plants annually…probably the best in the world. The first round of distribution in January of each year is limited to 25 different seed types (35 if you donate seed), and the second round, which just went live, allows members to select another 100 varieties. We just got out order submitted, and now anxiously await their arrival.
We think the seed exchange alone is worth far more than the annual dues, but there’s so much more from tours, to meetings, to networking, and a great journal. So, if you want to become a seedaholic, here’s your path to addiction!