I have a cassia tree that is constantly in bloom in yellow - it just came up right next to my horse barn. It gets full sun until about 2-3pm and is apparently in a protected spot that it likes. I don't want it there and plan to move it in January. Not sure how it got there but its really pretty and I would like to incorporate it into my landscape. Also have a baby that came up in a pot and is turning into a nice little tree. After reading about them, I find that they don't like temperatures below 30 degrees. I am in east Texas and we can definitely get temps below 30. Not often anymore, but it happens. Both trees have survived for several years so I am hoping that this particular variety can survive here. My question is can these trees survive and grow in my area or mine just accidents? If so.....where should I situate them and what, if any, special recommendations can be made to ensure their success? Thank you for any information.