Ferocactus latispinus aka Devil's Tongue Cactus

Ferocactus latispinus is a perennial cactus from Mexico. Its native range runs from Durango south to Puebla. It belongs to the cactus family, Cactaceae. Common names include candy cactus and crow's claw cactus. People also call it devil's tongue barrel cactus. It grows in dry scrub, grassland, and open oak woods. Wild plants grow on silty plains and rocky slopes. The species has many widespread populations across its range.

Its round stem often has a flat top. The body is light green to blue-green. Plants often grow wider than they grow tall. Reported stems reach 0.3–1.1 feet [0.10–0.35 metres] tall. Some reach 1.3 feet [0.40 metres] in height. Their width spans 0.8–1.5 feet [0.25–0.45 metres]. RHS gives a cultivated upper size of 1.6 feet [0.5 metres] each way. About 21 sharp ribs divide the stem's surface. Felted areoles sit on raised points along these ribs. Fine outer spines surround thick, flat central spines. The lowest central spine bends down toward the body. Red or brown spines contrast with the green stem.

Pink flowers open in winter and have a funnel shape. Other reported flower colours include rose, purple, and pale yellow. The flowers can have a scent. Egg-shaped fruits reach about 0.08 feet [0.025 metres] long. People eat the fresh fruit, though it tastes very sour. They also use the stem pulp to make candy. Sources report medicinal use but give no treatment details. Useful Tropical Plants lists no known hazards. That statement does not establish safety for every use.

Grow this cactus in full sun with shelter. Use cactus compost that lets excess water drain away. Sandy or loamy soil can suit it. It accepts acid, neutral, and alkaline soil conditions. Water moderately while the plant grows, then reduce winter watering. Let the soil dry before watering again. RHS rates its UK hardiness as H2. It tolerates cool conditions but needs protection from freezing. Plants may take five to ten years to mature.

Its ribbed form suits pots, patios, and indoor displays. Greenhouses and conservatories also provide suitable growing spaces. The plant needs no pruning. Sow seed in spring at 21°C for propagation. Mealybugs may attack it. Too much water can cause stem and root rot. Cold, damp winter conditions increase the risk of decay. Wild collecting affects some populations near towns and villages. Grazing livestock also damage the habitat where it grows. Useful Tropical Plants reports its conservation status as Least Concern.