Common nitrogen
ingredients
(n)
Blood meal
This is an extremely rich, fast-releasing nitrogen source. Blood meal is a great additive for plants that require high amounts of nitrogen.
Fish meal
Fish meal is another fast-releasing nitrogen source. It’s a great nitrogen additive that enhances microbial life in the soil. Fish meal also contains a significant amount of phosphorus, which helps trigger root development.
Feather meal
Feather meal is a slow-releasing nitrogen source best used on plants that require high amounts of nitrogen over a three to four month period.
Soybean meal
This slow-releasing nitrogen source is not quite as slow as feather meal. It’s a great additive for plants that require adequate nitrogen for two to three months and that need a little phosphorus boost to help promote fruiting or flowering.
Bat guano (high nitrogen)
There are many compositions of bat guano on the market, including high-nitrogen bat guano. High-nitrogen bat guano is rich in micronutrients, beneficial microbes and, of course, nitrogen. This beneficial diversity combined with fast-releasing nitrogen makes high-nitrogen bat guano the fertilizer of choice for many organic growers.
