Hydrofarm® Roots Organic Super Phos Rock – 7100268249162

Our most concentrated organic phosphorus source, Roots Organics Super Phos Rock packs 22% available calcium. This one-two punch of phosphorus and calcium simultaneously maximizes heft and quality, bringing flavors to the forefront while improving yields like a targeted flower hardener. A great example of why phos rock can’t be beat!

NPK 0-9-0

LIGHT FEEDING — Add 1/2 teaspoon per gallon of soil.Container Gardening

• Light Feeding:  Add 1/2 teaspoon per gallon of soil
• Heavy Feeding: Add 1/2 Tablespoon per gallon of soil

Liquid Application

• Add 1-2 Tablespoons bat guano per gallon of water and let brew for 24 to 48 hours. Water direct into soil.

Vegetable Gardens and Flower Beds

• Apply 2-3 lbs per 100 square feet and mix into soil.