NPK- 0-9-0; the large percentage of phosphorous and trace elements make this an all-around soil amendment for all houseplants, vegetables and shrubs. Aids in healthy root growth and bud development and can be used as a seed starter mix by mixing 1 lb. Per 5 gallons of potting mix. Use 1 tablespoon per 4″ diameter container or 2 pounds per 100 square feet and rake into soil.