Top 10 Organic Fertilizers
Blood Meal: 13-1-0 Great source for nitrogen and can be mixed in with potting soil and added to the soil of established plants monthly.
Bone Meal: 4-12-0 Awesome source for phosphorus and helps the plant to grow a healthy root system. Works great in conjunction with blood meal.
Compost: 2-1-1 Compost adds organic matter that provides food for beneficial microbial life, which in turn increases the amount of water the soil can hold. Compost also contains many micronutrients essential for healthy plant growth.
Earthworm Castings: 2-1-1 A overall great organic fertilizer for flower and edible gardens.
Bat Guano: 0-5-0 Excellent source of phosphorus and an essential organic additive for vegetable gardens.
Fish Emulsion: 2-4-5 Has a little bit of everything. This is does not smell all that wonderful – you have been warned!
Alfalfa Meal: Great fertilizer 2.45-.05-1 for roses and encourages soil microbial activity, which makes nutrients more readily available to roses.
Cottonseed Meal: 7-2-2 Has a high percentage of nitrogen, second best source of organic nitrogen after blood meal. Cottonseed meal also acidifies the soil.
Feather meal: 7-0-0 to 12-0-0 It takes 4 months to break down and release its nutrients, but it is a high nitrogen fertilizer. It is a poultry processing byproduct.
Rock phosphate: 0-2-0 A mineral rock powder, rock phosphate is an excellent source of phosphorous and calcium. Remember that the phosphorous contained in rock phosphate becomes more available the second year after application. Be sure to test soil pH before adding rock phosphate.