Glauconitic Greensand is a mineral-rich siltstone mined from ancient marine sediments.
What is it ?
Greensand is a time-tested soil additive produced from slow forming marine depositions that are mined and then dried and used as a soil conditioner. It one of the highest natural sources of potassium, and is a good source of iron and magnesium. Greensand can increase oxygenation and promote root growth by breaking up clays.