Dozens of cactus species produce edible pads, fruits, or buds, but the most widely eaten by far is the prickly pear (Opuntia). Dragon fruit also comes from a cactus, which surprises many people. Beyond those two, saguaro, barrel cactus, cholla, and several lesser-known species all have edible parts with long histories of human use.
Prickly Pear: The Most Common Edible Cactus
Prickly pear is the entry point for most people interested in eating cactus. It offers two completely different edible parts. The flat green pads, called nopales in Spanish, are a vegetable. The oval fruits that grow along the pad edges, called tunas, are sweet and juicy. People in Mexico and Central America have been harvesting both for thousands of years, first from wild plants and later from cultivated crops.
Once you remove the spines and tough outer skin, the pads (now called nopalitos) can be eaten raw or cooked. They have a mild, slightly tart flavor with a texture somewhere between green beans and okra. Sliced thin and grilled, sautéed with onions, or diced into scrambled eggs, they’re a staple in Mexican cuisine. The fruits taste sweeter, similar to watermelon or bubblegum depending on the variety, and work well in juices, jams, and cocktails.
A systematic review in the journal Medicina found that eating prickly pear pads significantly reduced blood sugar levels in people with type 2 diabetes, with some studies showing reductions beginning within one hour after a meal. The fruit, interestingly, did not show the same consistent effect on blood sugar. This makes nopales a particularly interesting food for people managing their glucose levels.
Dragon Fruit Grows on a Cactus
Dragon fruit comes from cacti in the Selenicereus family, sometimes still sold under the older name Hylocereus. Three main types show up in grocery stores. White-fleshed dragon fruit is the most common and mildest in flavor. Red-fleshed dragon fruit is noticeably sweeter. Yellow dragon fruit, with its bright yellow skin and white interior, tends to be the sweetest of the three and carries a higher price tag. All have a soft, seed-speckled texture similar to kiwi.
Unlike prickly pear, dragon fruit requires no spine removal or special preparation. You simply cut it in half and scoop out the flesh. These cacti are now commercially farmed across Southeast Asia, Central America, and parts of the southern United States.
Cholla Buds
Cholla cactus looks aggressively inedible, covered in dense clusters of barbed spines. But the flower buds, harvested just before they open in spring, are a traditional food of the Tohono O’odham people of the Sonoran Desert. Properly prepared, cholla buds taste like a combination of green bean, artichoke heart, and asparagus.
Harvesting requires tongs or wooden sticks to pluck the buds without getting spined. After removing all spines, the buds are typically blanched for about two minutes and then dehydrated. Fresh cholla buds develop a slimy texture similar to okra, so drying them first and rehydrating later gives a better result. Rehydrated buds need to be simmered until tender, which takes anywhere from 30 to 90 minutes. They’re traditionally tossed into salads or sautéed with chile and onions.
Saguaro Fruit
The giant saguaro cactus of the American Southwest produces green oval fruits that split open in early summer to reveal red-to-purple pulp. For the Tohono O’odham, Pima, and Yavapai peoples, saguaro fruit has been a critical food source for centuries, ripening during the hottest weeks of early summer when little else is available. The Tohono O’odham calendar actually begins and ends based on saguaro fruiting time, and the harvested fruit is made into ceremonial wine.
One important note: saguaro cacti are classified as “Highly Safeguarded” under Arizona law. You cannot remove a saguaro or any of its parts, including fruits and seeds, from any land (public or private) without the landowner’s permission and a permit from the Arizona Department of Agriculture. This protection is strictly enforced.
Barrel Cactus
Several species of barrel cactus (Ferocactus) produce small, edible fruits. The Turk’s head barrel cactus is one of the better-known edible varieties. The fruits are tart and can be eaten fresh or dried. In Mexico, the flesh of certain barrel cactus species is candied into a traditional sweet called biznaga, though overharvesting for this purpose has threatened wild populations.
Other Edible Species Worth Knowing
The list of edible cacti is longer than most people expect. Organ pipe cactus produces sweet fruits called pitayo dulce that ripen in summer across the Sonoran Desert. Garambullos, the small fruits of Myrtillocactus geometrizans, taste like less-acidic cranberries and are popular in central Mexico. The Barbados gooseberry (Pereskia aculeata) is an unusual leafy cactus whose leaves and fruit are both eaten in the Caribbean and South America. The zigzag cactus, a popular houseplant, produces small fruits that taste similar to kiwi.
Strawberry hedgehog cacti (Echinocereus) are a whole group of species producing small, sweet, red fruits across the American Southwest. Prickly apple cacti (Harrisia) bear larger fruits throughout the Caribbean and South America. And the orchid cacti (Epiphyllum), commonly grown as ornamentals, also produce edible fruits, though they’re rarely harvested.
How to Handle Cactus Safely
The biggest practical challenge with eating cactus isn’t toxicity. It’s the spines, particularly the tiny, hair-like ones called glochids found on prickly pear and cholla. Glochids are nearly invisible and embed in skin on contact, causing persistent irritation. If you get them in your hands, tweezers under bright light will remove roughly half of them. For the rest, apply duct tape to the area and rip it off. The most thorough method is a two-step process: tweeze first, then wrap the area in gauze soaked in white glue, let it dry completely, and peel it away.
When preparing prickly pear pads or fruit, hold them with a fork or thick towel and use a sharp knife to trim the edges and shave off the spine clusters (called areoles) before peeling. Many grocery stores sell pre-cleaned nopales, which eliminates the risk entirely. For fruit, you can also hold the tuna over a flame to burn off glochids before peeling.
What Not to Eat
Not every succulent-looking plant in the desert is a cactus, and this distinction matters. Euphorbia plants, sometimes called “spurge,” are often mistaken for cacti because they can look strikingly similar, with thick green stems and even spines. But euphorbias are not cacti. Many species secrete a white, milky latex when cut that is intensely irritating to skin and eyes and toxic if swallowed. If you cut into a cactus-like plant and it bleeds milky white sap, do not eat it. True cacti produce clear or slightly colored sap, not milky latex.
As a general rule, stick to species with a well-documented history of human consumption. Prickly pear pads and fruit are sold in grocery stores across the Americas. Dragon fruit is globally available. Cholla buds and saguaro fruit can be found at specialty markets in the Southwest. If you’re foraging rather than buying, positive identification is essential, and local foraging laws vary by state and land type.