Bald or pond Cypress, if you're looking for something in tree form. Most Lobelia species can also take a bit of drying out in the summer.

Hi,

I need a tree of aloe Vera for my garden. Which is going to very useful for our skin. Can someone please tell me where can I find the best tree.

Stella

I never knew that aloe grew as a tree. I always have one in my house during the winter and put it out side during the summer (zone 6+) It looks like a big cactus. You can get them at any nursery around here.