Down To Earth Rock Phosphate 0-3-0. Soft rock phosphate or colloidal phosphate, is a natural, untreated source of long-lasting phosphate and soil-building calcium. Phosphate will remain available across a wide pH range. For finest availability, soft rock phosphate should be mixed into soil or compost prior to planting.
| Color | : | Tan |
| Container Type | : | Box |
| Form | : | Powder |
| Ingredients | : | Phosphate Rock |
| N-P-K Ratio | : | 0-3-0 |
| Net Content | : | 5 lb |