I don't grow it so cannot comment on it personally, but assume you're talking about pink bush morning glory, which can get up to 8' tall, so is often referred to as a morning glory tree. Here's some info about it if this is the one you have:

Pink Flowered Morning Glory Info at Onalee's Seed Websit

Thanks, Dawn. I don't know if it's the same or not. I need to go back to the Master Gardener and check. I don't remember hers being staked. It really is the prettiest thing!