15% potash and contains 30+ trace minerals. Espoma #GS36 36LBLB Greensand … Traditionally used to loosen heavy clay soil or to hold together loose sandy soils, DTE Greensand is able to absorb up to one-third its weight in water to improve the moisture holding capacity of garden soils and potting mixes. $19.99. If there is an immediate need for available potash, it is suggested that Greensand Plus (a combination of Greensand … A popular soil amendment and natural source of potash! NOTE: Greensand is a slow release insoluble source of potash and trace elements. DTE Greensand is highly recommended for vegetables, fruits, herbs, lawns, ornamentals and all types of trees and shrubs. Apply at 1-2 … Down to Earth Organic Langbeinite Fertilizer Mix 0-0-22, 5 lb 4.6 out of 5 stars 205. Down to Earth Organic Greensand Fertilizer, 5 lb 4.8 out of 5 stars 128. $18.25. Down To Earth Greensand is composed primarily of glauconite, a blue-green siliceous mineral that is harvested from marine sedimentary … 7 . Improves moisture holding capacity of garden soils and potting mixes. Loosens clay soils, binds and catalyzes release of additional nutrients from the soil. This green colored sand has a fine sandy like formulation. DTE Greensand … …