Question: are all cactus plants edible?
Answer: All true cactus fruit is safe to eat, but some taste better than others. ... Many edible cacti belong to one of the 200+ Opuntia species, also known as the Nopales, Nopalitos, the Cactus Pear, or the Paddle Cactus. The leaves and egg-shaped fruit (or "tunas") of all Opuntia are edible.