Upside-down gardening, primarily of leggy crops like tomatoes, cucumbers and peppers, is more common partly because of the ubiquity of Topsy Turvy planters, which are breathlessly advertised on television and have prominent placement at retailers like Wal-Mart, Walgreens and Bed Bath & Beyond. According to the company that licenses the product, Allstar Products Group in Hawthorne, N.Y., sales this year are twice last year’s, with 20 million sold since the planter’s invention in 2005. Not to be outdone, Gardener’s Supply and Plow & Hearth recently began selling rival upside-down planters. “Upside-down gardening is definitely a phenomenon,” said Steve Wagner, senior product manager for Plow & Hearth.
The advantages of upside-down gardening are many: it saves space; there is no need for stakes or cages; it foils pests and fungus; there are less, if any, weeds; there is efficient delivery of water and nutrients thanks to gravity; and it allows for greater air circulation and sunlight exposure.