Fertility
Fertility was the condition whereby organisms (including humanoids) are capable of producing offspring. The lack of such an ability is known as infertility or sterility.

Many cultures throughout the Milky Way have rituals and symbolism pertaining to fertility. On Risa, the horga'hn is a symbol of fertility, and displaying a horga'hn to a Risian indicates that one seeks jamaharon. (). In 2373, Neelix speculated that symbols observed in a cave on the Nechani homeworld may have pertained to fertility. ()

Fertility can also refer to the capacity of a soil to support agriculture. In 2267, Spock observed that the soil of Gamma Trianguli VI was fertile and suitable for husbandry. () In 2269, the  transplanted the Terratin colony to Verdanis, a fertile planet.() In 2371, the Bajoran Provisional Government sought to use soil reclamator to restore the fertility of land in Rakantha Province, formerly one of the most productive agricultural regions of Bajor before its soil poisoned by the Cardassians and rendered unusable for agriculture. ()

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Sex and reproduction
Botany