We have had the upside down things growing around here for a few years. We have usually just stuck things like Patio, Snow White and other cherry type things in them. They do OK. They are pretty easy to deal with once you get the plant in. Be sure to start with a small plant or something with a small root ball. You have to stick it in through the bottom, put the gasket thing around it, fill it with dirt and water. Pretty easy.
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It's good to have friends
It's better to have friends with boats
***GutZ***