There are two kinds of upside down tomato planters and systems:
Each has strengths and weaknesses for the home gardener.
Design: a hanging container
Positioning: requires a bracket or hook for hanging
Cost: inexpensive per planter (about $10-15 each), but can only accommodate 1-2 tomato plants
Portability: easy to move planters from one hook to another, as in moving indoors from outside
Space: does not require floor, patio, or garden space for set up; can be suspended from balcony, terrace, car port ceiling or even indoors
Variations: some hanging planters are simply bags; others are plastic containers.
The Topsy Turvy®, for instance, is a fabric bag that may need to be replaced after one season because of exposure to UV rays and the elements.
The Upsy Downsy™ is a basic plastic planter with a small sheet of strong interfacing screen material placed over the bottom hole, and can last for several seasons.
Design: self-contained, free-standing units
Positioning: stands upright; does not require overhead hook or bracket for hanging
Cost: about $75-100 each; more expensive than hanging planters but can accommodate several plants
Portability: gardens are fairly large and cannot be moved easily
Space: requires floor, patio, or garden space for erecting
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