Wall Rock Cress
Arabis caucasica
(AR-uh-biss)
Synonym: alpina subsp. caucasica
An alpine perennial Arabis is especially good for rock
gardens and the edging of borders. It forms a nice mound of foliage and a early
spring a carpet of flowers. The flowers are fragrant and remind me of Sweet
Alyssum. There are many species available but this one seems to be, in my
experience, the most available.
Like most alpine plants there is a requirement for good
drainage. The winter drainage is most important for keeping a patch going but
it will not tolerate poor drainage in the summer either. It’s low maintenance
only requiring a light shearing after blooming and we raked it out at the end
of the season.
In this picture on the timbers that forms an edge of a rock
garden. The Rock Cress has grown right up to the wood and formed a carpet.
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