Red Cactus Pears have beet-red flesh rich with powerful antioxidants under their skin that is juicy, lightly sweet and has flavor that I’d describe having floral and watermelon tones. It’s quite unique and worth a try. Cactus Pears are used as a raw fruit snack, in drinks and cocktails, in smoothies and shakes and more. Check out these recipe ideas. Cactus Pears are the fruit that grows from the wide-pad leaves of desert Cactus plants. They have dangerous spikes on them just like the rest of the cactus plant, but professional growers carefully harvest them in with the right gear and equipment and then use machines to remove the thorns.