0-0-0, 23 Ca, 17 S
This quick reaction amendment loosens clay soil, encourages microbial life and adds calcium. When combined with water, the sulfur available in gypsum forms a weak sulfuric acid that releases calcium from the soil, making it available to the plant. Excellent for growers with soils exhibiting adequate or high pH levels but lacking calcium.
Application rate: 2 - 4 lbs. per 100 square feet