I wish I had joined this site sooner. Feel I missed out on this thread. Anyway, I guess it's never too late to learn. I'm originally from South Africa, and just wanted to say that my mum grows curry leaves in SA, outside were the temp doesn't drop below 10 degrees C (we're on the coast). The leaves are green and the plant does look tree-like. We use it in all curries - usually just 1/2 sprigs with about 8-10 leaves on each. Wouldn't try the curry plant mentioned earlier. I felt very home sick as I read this thread.