These are the cages I use - we built them several years ago, the only downside is storage but I just move them to one end of the garden during the winter. They're about 2 feet square and 5 feet tall. We use some heavy stakes (you can see one in the middle here) to anchor them, so they don't all tip over in the wind, and I put a tall stake inside to tie the plant to as needed, although for the most part the cage will pretty much hold it up.