| Materials | % N | % P | % K |
| Ashes, unleached | 0 | 2.0 | 6.0 |
| Ashes, leached | 0 | 1.2 | 2.0 |
| Blood (dried) | 12 to 15 | 3 | 0.6 |
| Bone meal, raw | 3.5 | 22 | - |
| Bone meal, steamed | 2.2 | 28 | 0.2 |
| Coffee grounds | 2.1 | 0.3 | 0.3 |
| Compost | 0.3 | 0.2 | 0.4 |
| Cottonseed meal | 6 to 7 | 2.5 | 1.5 |
| Greensand | - | 1 to 2 | 5.0 |
| Green manure, rye | 2.0 | 0.2 | 1.0 |
| Green manure, oats | 1.3 | 0.2 | 1.1 |
| Hay (legume) | 3.0 | 1.0 | 2.4 |
| Hay (grass) | 1.5 | 0.5 | 1.9 |
| Hair | 12 to 16 | - | - |
| Kelp or seaweed | 1.5 | 1.0 | 4.9 |
| Lawn clippings | 1.2 | 0.3 | 2.0 |
| Leaves, oak | 0.8 | 0.4 | 0.2 |
| Leaves, sugar maple | 0.7 | 0.1 | 0.8 |
| Leaves, white oak | 0.6 | 0.1 | 0.5 |
| Peanut hull meal | 1.2 | 0.5 | 0.8 |
| Oyster shells | 0.2 | 0.3 | 0.03 |
| Peat moss | 1.9 | 0.2 | 0.2 |
| Sawdust, wood shavings | 0.2 | - | 0.2 |
| Sewage sludge | 2.6 | 3.7 | 0.2 |
| Sewage sludge, activated | 6.0 | 3.0 | 0.2 |
| Straw, oat | 0.7 | 0.2 | 1.6 |
| Straw, wheat | 0.6 | 0.2 | 1.0 |
Consumer Horticulture | Quick Reference
© Erv Evans, Consumer
Horticulturist
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