Let it set for several days before you use it. Fish meal, blood meal, bone meal, animal manures, cottonseed meal and processed sewage sludge are organic sources for nitrogen fertilizer. Phosphate rock and bone meal are the two organic fertilizers used to supply phosphorus. Wood ashes and rock potash are the two main sources of organic potassium. Your local garden department will generally stock several of the above organic fertilizers.
Cover crops are another excellent organic fertilizer.
Weed Control - The organic gardener will generally control most garden weeds by regular cultivation with a hoe, shovel or rake. Garden mulches of peat moss, bark, sawdust, compost or straw are also used to help control weed growth. Grass clippings and leaves are also used, but I suggest they be composted instead, which helps eliminate any chance of insects or diseases being carried over into the garden. Grass clippings and leaves sometimes become incubators for both insects and diseases. Black plastic sheeting is frequently used for weed control in the vegetable or flower garden.