Organic fertilizer

n. organic manure, fertilizing materials for the improvement of the soil, natural dung from plants and wild-life

Fertilizers (also spelled fertilisers) are compounds given to plants to promote growth; they are usually applied either via the soil, for uptake by plant roots, or by foliar feeding, for uptake through leaves. Fertilizers can be organic (composed of organic matter), or inorganic (made of simple, inorganic chemicals or minerals). They can be naturally occurring compounds such as peat or mineral deposits, or manufactured through natural processes (such as composting) or chemical processes (such as the Haber process).
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Noun
1. a fertilizer that is derived from animal or vegetable matter
(synonym) organic, organic fertiliser
(hypernym) fertilizer, fertiliser, plant food
(hyponym) bonemeal

Organic material such as manure or compost, applied to cropland as a source of plant nutrients.