Cactus's'

cac·tus·is
ˈkaktəs/is
noun
succulent plants with thick, fleshy stems that typically bear spines, lack leaves, and have brilliantly colored flowers. Cactus's' are native to arid regions of the New World and are cultivated elsewhere, especially as houseplants. Used as the plural form of the word cactus, however people commonly misuse the word cacti.

That's alot of cactus's' growing there on the baby cactus farm, wow.