Bone Meal: Complete Guide
An organic phosphorus fertilizer made from ground animal bones. Slowly releases phosphorus and calcium over 1-4 months. Excellent for root development, flowering, and bulb planting. Must be mixed into soil. Surface application is ineffective.
Key Facts
3N
15P
0K
N 3% Nitrogen: leaf and stem growth
P 15% Phosphorus: roots and flowers
K 0% Potassium: health and disease resistance
Learn more about NPKNPK Ratio
3N
15P
0K
N 3% Nitrogen: leaf and stem growth
P 15% Phosphorus: roots and flowers
K 0% Potassium: health and disease resistance
Learn more about NPKFormpowder
Application Rate5-10 lbs per 100 sq ft mixed into soil before planting
Price~$2.5/lb est.
Release Speedslow
Burn Risklow
Low Risk: Safe application rate for most plants.
What is Bone Meal Best For?
When Should You Use Bone Meal?
Mix into planting holes for bulbs, transplants, and perennials. Good for phosphorus-deficient soils with pH below 7.
When Should You NOT Use Bone Meal?
Ineffective in alkaline soils (pH above 7) where phosphorus binds to calcium. May attract animals.
Source:Oregon State Extension