I once had what someone called a "tree geranium," which had long, upright stems that had to be staked after they got so tall. It would get up to about 5 feet tall if left to its own devices. I can't find anything now called a "tree geranium," and I've read that you can train them into tree form, but you need a variety with long, straight stems. Does anyone know where I can find such plants? I'd prefer red or white, not too crazy about pink.