Walt's Colloidal Soft Rock Phosphate Granulated 4 LB
Colloidal Silver by Walt's Organic Fertilizer Co.
- Price
- $23.24
What the brand says
Colloidal Soft Rock Phosphate is a great natural source of slow release phosphorous. It can also provide low levels of trace minerals and valuable trace elements such as: calcium, iron, sodium, magnesium, boron, and iodine.