Sativum

Sativa, Sativus, and Sativum are Latin botanical adjectives meaning cultivated, used to designate certain seed-grown domestic crops.

Sativa (ending in -a) is the feminine form of the adjective, but masculine (-us) and neuter (-um) endings are also used to agree with the gender of the nouns they modify. For example, the masculine Crocus sativus and neuter Pisum sativum.