Provides phosphate that remains available to plants across a wide pH range
Soft rock phosphate, or colloidal phosphate, is a natural, untreated, vegetarian source of long-lasting phosphate & soil building calcium. Rock phosphate provides phosphate that remains available to plants across a wide pH range. For best availability, Down To Earth soft rock phosphate should be mixed into soil or active compost prior to planting. A superb nutrient resource for plants of all kinds.
Down To Earth 100526004 Rock 5 lb Phosphate White DYNHPLKTX