crape myrtles in pots
Has anyone here had success with growing crape myrtles in containers? Not the dwarf varieties, but actually tree-shaped? I would like to do three on my patio to shade the a/c unit, and would ideally like a purple or lavender variety. But, it looks like all of them are either HUGE trees (like Muskogee) or "bushy" shaped (like Catawba). I realize I'll have to take them out every couple of years or so and root-prune to keep them healthy in containers, but I'm willing to do that.
Oh, and I thought of chaste tree instead, but I'm concerned it wouldn't work so well tree-shaped in a container.