Available in 2 sizes
1LB Bag, 5LB Bag
Gypsum is composed of calcium (Ca) and sulfur (S) – two of the essential nutrients that plants require to achieve optimum growth and reach their maximum potential. Gypsum offers many advantages for soil management practices in addition to being a valuable resource for plant fertility programs. We offer a high performance solution grade powder that growers can apply with confidence. Designed for efficient delivery and immediate uptake, this 325 mesh powder can be used in reservoirs, fertigation, drip irrigation or spray applications.
2 cups ≈ 1 lb; 1 Tbsp ≈ 10 g; 1 tsp ≈ 3 g
Plant nutrient requirements are determined by multiple factors including target crop variety and existing nutrient content in the soil. Performing a complete soil or plant tissue analysis or using a home soil test kit before application is recommended. Testing services will provide guidelines for the efficient application of all fertilizers and soil amendments. Soil texture reports can help identify problems and inform appropriate application rate amounts for improving soil physical characteristics. Gypsum is neutral in pH and will not affect soil acidity. To prevent scale build-up, assure that water used for dilution has a pH of no higher than 6.5.
With Soil Analysis and Recommendations:
Mix the total weight of recommended Down To Earth Solution Grade Gypsum with water at a rate of no more than 1 lb per gallon of water. Mix this concentrated solution into the total volume of water necessary for coverage. Continued agitation is recommended to keep diluted solution in suspension.
Without Soil Analysis (recommended rates for general use):
For foliar and spray applications, mix ½ – 1 tsp per gallon of water. Apply with even coverage directly to plant leaves. For soil drench applications, mix 1-2 Tbsp per gallon of water.
CALCIUM (Ca) 22.5%
SULFUR (S) 17.5%
Calcium Sulfate Dihydrate (CaSO4·2H2O) 97.0%
Listed by the Organic Materials Review Institute for use in organic production.