Game changer in diversity
These first sections are filled with an array of agaves and cactus, many of which are derived from our own breeding program. In between those are an array of Arilbred iris, which are considered ungrowable in the hot, humid Southeast US. Other plants like the drought-requiring Alloberberis trifoliata (Silver Barberry) thrive here, and the virtually ungrowable Texas native Penstemon baccharifolius (Rock Beardtongue) also are right at home. In one small section, plants are planted in pure Dolomitic Lime, right out of the bag – one of our more interesting experiments. This crevice garden area almost never receives any supplemental irrigation.
The final crevice section on the south end was completed in 2019. Here, instead of using straight Permatill, plants in this section are grown in the same 50%/25%/25% mix, that’s used in the parking lot dryland beds. This section also included several more seeps, where special ferns reside, that need these conditions.