|
Nutrient
Values of Common Compost Materials
|
Material
|
% Nitrogen
|
% Phosphorous
|
% Potassium
|
| Banana skins |
-
|
3.25
|
41.76
|
| Cantaloupe rinds |
-
|
9.77
|
12.21
|
| Castor bean pomace |
5.00
|
2.00
|
1.00
|
| Cattail reeds |
2.00
|
.81
|
3.43
|
| Coffee grounds |
2.08
|
.32
|
.28
|
| Corncobs |
-
|
-
|
50.00
|
| Corn stalks and leaves |
.30
|
.13
|
.33
|
| Crabgrass, green |
.66
|
.19
|
.71
|
| Eggs, rotten |
2.25
|
.40
|
.15
|
| Feathers |
15.30
|
-
|
-
|
| Fish Scraps |
2.0-7.50
|
1.5-6.0
|
-
|
| Grapefruit skins |
-
|
3.58
|
30.60
|
| Oak leaves |
.80
|
.35
|
.15
|
| Orange culls |
.20
|
.13
|
.21
|
| Pine needles |
.46
|
.12
|
.03
|
| Ragweed |
.76
|
.26
|
-
|
| Tea grounds |
4.15
|
.62
|
.40
|
| Wood ashes |
-
|
1.00
|
4.0-10.00
|
| |
|
|
|
Source - Organic Vegetable Gardening, James M. Stephens, Circular
375, Florida Cooperative Extension Service |
