Well, I was brought one as a gift last summer. It's still in that container for now. I've left it outside enough that it got unintentionally exposed to overnight frosts and temps down to about 30F briefly. Those didn't seem to harm it, but were enough to kill and severely damage a couple of other plants left out at the same time. That link Larry provided said it can withstand temps down to 20F, but after that it would need protection. That sounds as if it would be a plant that could be in the ground the year round in Kingwood, doesn't it? There would be an occasional winter here that would work, but I think generally we'd have at least one cold spell that exceeded the cold tolerance. Even so, that kind of knowledge is useful for winter handling. It clearly likes more sun than it gets when I bring it in, so the more time it can spend outside without that being a death sentence, the better. However, I don't always assume that kind of information is necessarily correct, so I was wondering if anyone was growing it where it would have been exposed to temps that cold.
