My in-laws have one. They had a really bad slug problem, and they didn't have a single slug on the plant in the upside-down pot. The one in the grown really had trouble, and the ones in the patio pots had almost as much. This year they've added two more upside-down pots.

The one thing is you have to be careful what variety of tomato you buy. Some tomatoes are indeterminate or "vining tomatoes), meaning they can get very, very large because they continue to grow until frost kills them. Others are determinate, or "bush" tomatoes. They produce most of their fruit all at once, which is great if you're using them for canning.

If you choose to plant a vining tomato in an upside-down planter, and you know you have a really long growing season, it's a good idea to plant it as high as you can, and use a watering wand if you have to. That way it won't end up growing onto the ground.

Reading what I've written, I'm going to plant the one I'm buying today from my kids' play house, which is about 20 feet tall. They'll have fun watering it from the second story.

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