I haven't tried any of my Lewisia coty. hybrids outside but I suspect my Devon climate is a good bit wetter than yours.
Hi David,
Lewisia cotyledon hybrids.
The two pictures below were taken over 20 years ago, and were when I covered my lewisias with glass during the winter months. Even then, they were not a continued success every year and deteariated over a few seasons. (I did find that L. columbiana did better though!)
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I would plant them on their sides, at a 45 degree angle, in a hole drilled in tufa; but the problem was that they would push their-selves out of the hole as the hole was usually tapered smaller as it went deeper into the tufa. I would have more success when I wedged the neck of the plant tightly between two rocks. But all that is by-the-by, and I dont grow them outside now.
I have no problems with the Carousel Hybrids and dont mollycoddle them in anyway. They always put on a good show of blooms, and the pictures I have included in the previous post shows that they have quite a few more buds to open yet!