Down to Earth Rock Phosphate 0-3-0 is essential for building soil phosphate levels for long-term plant productivity and for preventing calcium deficient soils. It should be applied to soils prior to planting and can be mixed with compost or manures for additional soil building benefits.
Ingredients: Soft Rock Phosphate.
OMRI Listed (Organic Materials Review Institute)
CDFA Listed (Registered Organic Input Material)