Gypsum | Organic Soil amp; Compost | Growing Organic
Although, lime lowers the acidity of soil by raising the pH levels, while gypsum works by restoring compacted soil. Though excess amounts of lime can burn and damage plants, gypsum has less risk. Because drywall is made out of gypsum, some people like to use their excess material in their garden beds as a cheap way to get the benefits of gypsum.