List of Organic Fertilizers

Do you want to help the environment and grow those big tomatoes?
cut tomatoes
I believe the key to a favorable outcome of organic fertilizers is to be loyal to its application and use. Know that when you use plant food and organic fertilizers that the results will take a little longer but the lasting results are much longer and more healthy. The list here is not all there is but what has worked for me. They represent materials found all around us and have been there for many centuries.

Greensand— An organic fertilizer which is a good source of iron, potassium, and trace minerals. Mined from ancient seabeds.

Fish Emulsion— An organic fertilizer produced from fish or fish by-products. Add seaweed to it and it will make an excellent fertilizer. NPK approx. 4-1-1 to 7-2-2.

Aragonite— It exists naturally in the shells of primitive elongated bilaterally symmetrical marine mollusks and other mollusks. It contains 94-97% calcium carbonate. It works by improving the soil and lessens soil acidity.

Soybean Meal— It is a high-nitrogen fertilizer. This meal has a NPK of 7-2-1. It is a high protein feed that when decomposed by microbes it provides natural organic nitrogen. It furnishes a soluble form of phosphorous.

Epsom Salts— Hydrated magnesium sulfate, used as a quick-acting reservoir of magnesium and sulfur. These are elements that are required in the soil. Outstanding fertilizer.

Coffee Grounds— The world is finding out that a tossed material is rich in nitrogen and should be added in the garden and compost piles. Ask your local coffee shop for their supply of grounds.

Cocoa Meal– WARNING FOR PETS due to caffeine content. Cocoa Meal contains 3% nitrogen, 4% phosphate and 3% potash. Application rates are normally two hundred to two hundred fifty pounds per acre. It is best used as an ingredient in a fertilizer mix and not as a direct amendment.

Seaweed— A saltwater plant that will accelerate root growth and has more than 60 trace minerals demanded by plants. This organic fertilizer if added with fish emulsion will make the best complete fertilizer.

Chilean Nitrate of Soda— Aka Natural Nitrate of Soda, is a highly soluble, fast-acting granular fertilizer that is 16% nitrogen. Adding this nitrate with an organic amendment like compost, cocoa meal or peanut meal will add to the effectiveness of both products.

Azomite— NPK is 0-0-2.5 and 5% Calcium. A natural volcanic mineral-rich in trace elements. May be used with potting soil, indoor plants, gardens and mix in with compost and your favorite organic fertilizer.

Molasses— A food for soil microorganisms. It contains trace minerals, sulfur, and potash. It is a very important part of the complete organic program.

Humates— A source of humic acid which is a natural organic lawn fertilizer with trace minerals and is the result of a nature successful compost. Smells like the forest decayed leaves.

Lava Sand— Ground up lava, rich with trace minerals, has a water-holding ability.

Lime— Gives soil an adjustment of the pH, reduces acidity, contains calcium that keeps magnesium low.

Crab Meal— NPK is 5-2-0.5. A soil improver which is a by-product of the crab industry. Once kiln dried they are ground up into the meal. Will add life to the soil by furnishing a protein chitin food for microorganisms.

Sul-po-mag— Natural fertilizer. A source of 22% sulfur, 22% potash and 11% magnesium.

Zinc— Hints of this mineral show up in organic fertilizers. Do a soil test first because too much of this mineral is harmful.

Sustane, aka composted turkey manure.– A very fast acting 100% composted organic fertilizer. NPK is 5-2-4. Made from real turkeys.

Gypsum— An excellent source of the micronutrients sulfur and calcium. Because of it’s draining capabilities and provides aeration it is added to clay soils.

Earthworm Castings— An organic fertilizer high in useable minerals and bacteria. The NPK is high with over 60 trace minerals, considered an ideal additive to soil. Made from worms digesting organic matter and passes the castings. Ammonium sulfate is toxic to earthworms.

Cottonseed Meal— Made from cottonseed. Compost 1st to rid toxic chemicals. Use in the compost pile. NPK is 6-1-1 considered by many to be the second-best source of nitrogen after blood meal. It is a slow-release fertilizer. It also adds acidity to the soil.

Corn Gluten Meal— A natural fertilizer and pre-emergent herbicide. Apply at the right time of year.

Compost— Considered the best organic fertilizer because it is high in microorganisms, humic acid, enzymes, vitamins, and humus. Make your own.

Bat Guano— Bat excretions, a natural fertilizer containing nitrogen and lots of trace minerals.

Blood Meal— A dried blood material with a nitrogen of around 12%. The organisms it into available nitrogen for plants. Use in the compost pile. A slow-release source of calcium and phosphorus used to increase phosphorus levels. NPK is 12-1-1.

Bone Meal, steamed— NPK is 1-13-0. It is the best source of phosphorus and also has calcium and some trace minerals. It is a slow-release therefore, it is a safe fertilizer when potting young or new plants.

Alfalfa Meal— A plant food growth regulator, rich in vitamins and minerals. NPK is 3-2-2. A green manure crop made from alfalfa that has a plant growth regulator hormone. It starts or re-starts vigorously millions of microbes that will then trigger soil organisms that convert the bordering nutrients into an useable form to plants.

Kelp Meal— Ground-up dried seaweed. A good source of copper and boron. Abundant in plant food growth hormones. A natural source of chelated trace elements that enhances the health of the soil and plants.

Manure— Not human’s in this country. It is rich in nitrogen and can be obtained from many different animals, even horses. It should be composted before using because it’s nitrogen and ammonia can burn plants.

Cover Crops— They are leguminous plants like clover, grains, rye, and oats. Planted for use as a green manure.

Rock Phosphate— A dry organic fertilizer. NPK is 0-25-0. A natural source of phosphorus, calcium and essential trace elements. It gets to build phosphate fertility, increase root activity in seedlings and transplants. Enriches the soil and quality of the crops.

Potash— A material containing potassium. It can be potassium carbonate from wood ashes. Where potassium is deficient in the soil, potash fertilizers can correct the problem and boost crop yields and quality.

Soybean Meal— A legume made into an organic fertilizer and used for its nitrogen. NPK is 7-1-2.

Feather Meal— NPK is 12-0-0. Feathers are ground up into a meal. Nitrogen is released over a long period of time. Used to enhance green leaf growth, initiate compost decomposition and
get better soil structure.

Granite meal— Ground from soft granite into rock powder. Good potassium to help produce starch and sugar for the plants. Its job is to furnish trace mineral content where the soil has been used too much and deficient in trace minerals.

Leather Meal— Made as a by-product during the tanning process. A source of slow-release nitrogen added to organic fertilizers.

Soft Rock Phosphate– Aka Colloidal Rock Phosphate. A soft, natural colloidal clay releases its nutrients slowly. Unlike other phosphates, it has colloidal clay that can tie up sandy soils and contribute to their nutrient holding volume.

Sulfate of Potash— NPK is 0-0-52. A natural potash that is 51% soluble. It is second only to nitrogen in the amount required for plants. It can be applied as a supplement or mixed with other materials. Do an accurate soil test before applying.

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