Opuntia drummondii, also known as Dune Prickly Pear, is a cactus species primarily found in the dunes of barrier islands or along sandy riverbanks. The ripe fruit of Opuntia drummondii is edible either raw or in jelly, and the pads can be consumed raw or cooked, provided that the spines and glochids are carefully removed before eating​​. (Do not consume any plant without first verifying its identity with the help of an expert.)

This species is particularly resistant to heat and drought, making it a good choice for xeriscaping.

Source: Wikipedia