Source : Webster's Revised Unabridged Dictionary (1913)

Horticulture \Hor"ti*cul`ture\, n. [L. hortus garden + cultura
   culture: cf. F. horticulture. See {Yard} an inclosure, and
   {Culture}.]
   The cultivation of a garden or orchard; the art of
   cultivating gardens or orchards.

Source : WordNet®

horticulture
     n : the cultivation of plants [syn: {gardening}]