NPK Value of Everything Organic – Searchable Database
We’ve started to compile a searchable database for the NPK values of everything organic that you might wish to compost, ferment or generally use in horticulture / permaculture. This isn’t just a database showing the NPK of organic fertilisers but includes the more obscure inputs such as the NPK of Coffee grounds, Tea Leaves and even the NPK of compost toilets!
There’s currently about 150 items in the list, if there’s something you’d like to see in particular use the contact form to let us know (Put ‘NPK of Everything’ in the subject)
| Fertiliser | Nitrogen (n) | Phosphorous (p) | Potassium (k) |
|---|---|---|---|
| Cottonseed Meal | 46 | 0 | 0 |
| Ground Fish (Dried) | 6.6 | 2 - 3 | 1 - 2 |
| Fish, Blood & Bone Meal | 5 | 5 | 6.5 |
| Activated Sewage Sludge | 5 | 3 | 0 |
| Blood Meal | 12 | 0 | 0 |
| Rock Phosphate (Ground) | 0 | 26 - 35 | 0 |
| Bone Meal | 3.5 | 17 | 0 |
| Chicken Manure (Dried) | 5 | 2 | 1 |
| Goat Manure (Dried) | 1.35 | 1 | 3 |
| Sheep Manure (Dried) | 1.51 - 3.09 | 1 - 2.5 | 0.33 - 2.25 |
| Poultry Litter (Dried) | 5 | 2 | 1 |
| Alfalfa (Hay) | 2.45 | 0.5 | 2.1 |
| Tankage | 11 - 12 | 1 - 2 | 0 |
| Apple (Fruit) | 0.05 | 0.02 | 0.1 |
| Apple (Leaves) | 1 | 0.15 | 0.35 |
| Apple (Pomace) | 0.2 | 0.02 | 0.15 |
| Apple (Skin, Ash) | 0 | 3.08 | 11.74 |
| Basic Slag | 0 | 18 | 0 |
| Cana Tree (Ash) | 0 | 0 | 15.65 |
| Banana Skin (Ash) | 0 | 3.25 | 41.76 |
| Banana Stalk (Ash) | 0 | 2.34 | 49.40 |
| Barley (Grain) | 1.75 | 0.75 | 0.5 |
| Bat Guano | 1 - 12 | 2.5 - 16 | 0 |
| Beet (Root) | 0.25 | 0.1 | 0.5 |
| Brewery Grain (Wet) | 0.9 | 0.5 | 0.05 |
| Brigham Tea (Ash) | 0 | 0 | 5.94 |
| Bone (Ground, Ash) | 0 | 34.7 | 0 |
| Silk Mill (By products) | 8.37 | 1.14 | 0.12 |
| Cantaloupe skin (Melon (Ash) | 0 | 9.77 | 12.21 |
| Castor-Bean (Pomace) | 5 - 6 | 2 - 2.5 | 1 - 1.25 |
| Cattail / Bulrush reed & Stem | 2.02 | 0.81 | 3.43 |
| Cattail / Bulrush Seed | 0.98 | 0.39 | 1.71 |
| Coal (Anthracite) (Ash) | 0 | 0.1 - 0.15 | 0.1 - 0.15 |
| Coal (Bituminous) (Ash) | 0 | 0.4 | |
| Cocoa shell (Dust) | 1.04 | 1.49 | 2.71 |
| Coffee Grounds | 2.08 | 0.32 | 0.28 |
| Coffee Grounds (Dried) | 1.99 | 0.36 | 0.67 |
| Corncobs (Ground, Charred) | 0 | 0 | 2.01 |
| Common Crab | 1.95 | 3.6 | 0.2 |
| Nettles (Stinging, European) | 5.6 | 0.7 | 3.7 |
| Comfrey | 1.8 | 0.5 | 5.3 |
| Corn (Grain) | 1.65 | 0.65 | 0.4 |
| Corn (Green Forage) | 0.3 | 0.13 | 0.33 |
| Cottonseed | 3.15 | 1.25 | 1.15 |
| Cottonseed - hull ashes | 0 | 7-10 | 15-30 |
| Cottonseed - hull (Ash) | 0 | 8.7 | 23.93 |
| Cotton Waste (Factory) | 1.32 | 0.45 | 0.36 |
| Cowpeas (Green forage) | 0.45 | 0.12 | 0.45 |
| Black-eyed Peas (Green forage) | 0.45 | 0.12 | 0.45 |
| Cowpeas (Seed) | 3.1 | 1 | 1.2 |
| Black-eyed Peas (Seed) | 3.1 | 1 | 1.2 |
| Crabgrass (Green) | 0.66 | 0.19 | 0.71 |
| Cucumber (Skin) (Ash) | 0 | 11.28 | 27.2 |
| Dog Manure | 1.97 | 9.95 | 0.3 |
| Jellyfish (Dried) | 4.6 | 0 | 0 |
| Mussel Mud (Dried) | 0.72 | 0.35 | 0 |
| Duck Manure (Fresh) | 1.12 | 1.44 | 0.49 |
| Eggs | 2.25 | 0.4 | 0.15 |
| Eggshell (Burned) | 0 | 0.43 | 0.29 |
| Eggshell | 1.19 | 0.38 | 0.14 |
| Feathers | 15.3 | 0 | 0 |
| Field Bean (Seed) | 4 | 1.2 | 1.3 |
| Field Bean (Shell) | 1.7 | 0.3 | 0.35 |
| Smokehouse Ashes | 0 | 0 | 4.96 |
| Fish Scraps (Fresh) | 2 - 7.5 | 1.5 - 6 | 0 |
| Mud / Silt (Freshwater) | 1.37 | 0.26 | 0.22 |
| Greasewood Ashes | 0 | 0 | 12.61 |
| Beans, Garden Beans & Pods | 0.25 | 0.08 | 0.3 |
| Gluten feed | 4 - 5 | 0 | 0 |
| Greensand (Glauconite) | 0 | 1 - 2 | 5 |
| Grapes (Fruit) | 0.15 | 0.07 | 0.3 |
| Grapefruit (Skin) (Ash) | 0 | 3.58 | 30.6 |
| Hair | 12 - 16 | 0 | 0 |
| Harbour Mud | 0.99 | 0.77 | 0.05 |
| Hoof & Horn Meal | 13 | 0 | 0 |
| Incinerator Ash | 0.24 | 5.15 | 2.33 |
| Kentucky Bluegrass (Green) | 0.66 | 0.19 | 0.71 |
| Kentucky Bluegrass (Hay) | 1.2 | 0.4 | 1.55 |
| King Crab (Dried, Ground) | 10 | 0.26 | 0.06 |
| King Crab (Fresh) | 2 - 2.5 | 0 | 0 |
| Leather (Acidulated) | 7 - 8 | 0 | 0 |
| Leather (Ground) | 10 - 12 | 0 | 0 |
| Leather Scraps (Ash) | 0 | 2.16 | 0.35 |
| Lemon Culls | 0.15 | 0.06 | 0.26 |
| Lemon Skins (Ash) | 0 | 6.3 | 31 |
| Limekiln Ash | 0 | 0.75 | 2 |
| Lobster Scraps | 4.5 | 3.5 | 0 |
| Lobster Shell | 4 | 3.52 | 0 |
| Milk | 0.5 | 0.3 | 0.18 |
| Mussels | 0.9 | 0.12 | 0.13 |
| Molasses residue (Brewing) | 0.7 | 0 | 5.32 |
| Oak Leaves | 0.8 | 0.35 | 0.15 |
| Oats (Grain) | 2 | 0.8 | 0.6 |
| Olives (Pomace) | 1.15 | 0.78 | 1.26 |
| Olive Waste | 1.22 | 0.18 | 0.32 |
| Orange Culls | 0.2 | 0.13 | 0.21 |
| Orange Skins (Ash) | 0 | 2.9 | 27 |
| Pea Pods (Ash) | 0 | 1.79 | 9 |
| Peanuts (Seed or Kernel) | 3.6 | 0.7 | 0.45 |
| Peanut (Shells) | 0.8 | 0.15 | 0.5 |
| Peanut (Shell, Ash) | 0 | 1.23 | 6.45 |
| Pigeon Manure (Fresh) | 4.19 | 2.24 | 1.41 |
| Pigweed (Amaranth) | 0.6 | 0.16 | 0 |
| Pine needles | 0.46 | 0.12 | 0.03 |
| Potato (Tuber) | 0.35 | 0.15 | 0.5 |
| Potato (Leaves / Stalks) | 0.6 | 0.15 | 0.45 |
| Potato skin (Ash) | 0 | 5.18 | 27.5 |
| Poudrette (Compost toilet) | 1.46 | 3.68 | 0.48 |
| Prune Waste | 0.18 | 0.07 | 0.31 |
| Pumpkin (Flesh) | 0.16 | 0.07 | 0.26 |
| Pumpkin (Seeds) | 0.87 | 0.5 | 0.45 |
| Rabbitbrush Ashes | 0 | 0 | 13.04 |
| Ragweed (Great / Common) | 0.76 | 0.26 | 0 |
| Red Clover (Hay) | 2.1 | 0.5 | 2 |
| Redtop (Bentgrass) (Hay) | 1.2 | 0.35 | 1 |
| Raw Sugar Residue | 1.14 | 8.33 | 0 |
| Seaweed (Ascophyllum nodosum) | 1.9 | 0.25 | 3.68 |
| Rose (Flowers) | 0.3 | 0.1 | 0.4 |
| Rhubarb (Stems) | 0.1 | 0.04 | 0.35 |
| Sagebrush Ashes | 0 | 0 | 4.1 |
| salt marsh hay (salt hay grass) | 1.1 | 0.25 | 0.75 |
| Salt Mud | 0.4 | 0 | 0 |
| Sardine Scraps | 7.97 | 7.11 | 0 |
| Sewage Sludge (Filter bed) | 0.74 | 0.83 | 0.24 |
| Shoddy & Felt | 4 - 12 | 0 | 0 |
| Shrimp Waste | 2.87 | 9.95 | 0 |
| Shrimp Meal | 6 | 6 | 0 |
| Silkworm Cocoons | 9.42 | 1.82 | 1.08 |
| Chimney Soot | 0.5 - 11 | 1 | 0.35 |
| Spanish Moss | 0.6 | 0.1 | 0.55 |
| Starfish | 1.8 | 0.2 | 0.25 |
| Sunflower Seed | 2.25 | 1.25 | 0.79 |
| Sweetpotato Skin (Boiled) (Ash) | 0 | 3.29 | 13.89 |
| Sweetpotato | 0.25 | 0.1 | 0.5 |
| Tanbark (Ash) | 0 | 0.24 | 0.38 |
| Tea Leaves (Grounds) | 4.15 | 0.62 | 0.4 |
| Tea-leaf Ash | 0 | 1.6 | 0.44 |
| Timothy Hay (Cat's tail) | 1.25 | 0.55 | 1 |
| Tobacco Leaves | 4 | 0.5 | 6 |
| Tobacco Stalks | 3.7 | 0.65 | 4.5 |
| Tobacco Stems | 2.5 | 0.9 | 7 |
| Tomato (Fruit) | 0.2 | 0.07 | 0.35 |
| Tomato (Leaves) | 0.35 | 0.1 | 0.4 |
| Tomato (Stalks) | 0.35 | 0.1 | 0.5 |
| Rabbit Manure | 7 | 1.7 - 3.1 | 0 |
| Wheat (Bran) | 2.65 | 2.9 | 1.6 |
| Wheat (Grain) | 2 | 0.85 | 0.5 |
| Wheat (Straw) | 0.5 | 0.15 | 0.6 |
| White Clover (Green) | 0.5 | 0.2 | 0.3 |
| White Sage (Ash) | 0 | 0 | 13.77 |
| Wood Ashes (Leached) | 0 | 1 - 1.5 | 1 - 3 |
| Wood Ashes (Unleached) | 0 | 1 - 2 | 4 - 10 |
| Wool Waste | 5 - 6 | 2 - 4 | 1 - 3 |
| Insect Frass | 3 | 2 | 3 |
Sources: – USDA and others
Notes :-
As ever this database is provided ‘as-is’ and should be used as such. The very nature of organic products makes it impossible to provide ‘accurate’ figures, but this can easily be used as a guide.
Remember, Phosphorous (p) actually gives the value for P2O5 and Potassium (k) K2O – as per fertiliser law. Read more about NPK labels here.
