I live in Gainesville, barely zone 9a, LOL, and I have had some in a protected location outside for 3 seasons now. They have done fine but I don't think they get enough light to bloom.
I have tons of them in the greenhouse planted directly into just the plain old sand, and they bloom their heads off. I have all colors: yellow, pink, purple, red, orange and white. Many are in bloom now. They will also climb walls, attaching with aeriel roots to brick or wood, so you can plant them next to stuff like mailboxes, fenceposts, etc and they will climb some and do great.
Radicans can easily take full sun, but some of the hybrids will definitely burn if you don't acclimate them slower.
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