Domesticated plants

A cultigen (), or cultivated plant, is a plant that has been deliberately altered or selected by humans, by means of genetic modification, graft-chimaeras, plant breeding, or wild or cultivated plant selection. These plants have commercial value in horticulture, agriculture and forestry. Plants meeting this definition remain cultigens whether they are naturalised, deliberately planted in the wild, or grown in cultivation.

thumb|upright=1.1|Aerial roots of a [[maize landrace, Sierra Mixe corn, grown in nitrogen-depleted soils in the Sierra Mixe, known for aerial roots with a bacterial gel that contributes substantially to the plant's nitrogen supply]]

cultivar grown during earlier periods of human history

tree farming

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