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Add one teaspoon of powdered Jell-O (any flavor) to the soil of houseplants. Then cover the Jell-O with a light coat of soil. The gelatin helps the plants to retain moisture, the nitrogen in the gelatin increases plant growth, and the sugar feeds microbes in the soil making more nutrients for the plant. I learned this from a gardening book. It works great!
Source: Joey Green's Gardening Magic
By Jean from North Wilkesboro, NC