Opuntia cochenillifera, commonly known as cochineal nopal cactus, is a perennial cactus native to semi-arid highlands and tropical areas in Mexico. It typically grows to a height of 6.5 feet (2 meters) and spreads to about 5 feet (1.5 meters) wide. This cactus has a distinctive appearance with flat, fleshy, oval to round pads that are green to blue-green in color. It blooms in late spring to early summer with showy yellow flowers that attract hummingbirds for pollination. After flowering, it may produce red-purple fruits that are edible and used in traditional Mexican cuisine.

The cochineal nopal cactus is valued for its drought tolerance and low maintenance requirements, making it suitable for xeriscaping and arid garden settings. It thrives in full sun and requires well-draining soil. Overwatering or poor drainage can lead to root rot. It is also known for its historical use as a host plant for the cochineal insect, which is harvested for carmine dye. In cultivation, it can be used as an ornamental plant or for the production of cochineal dye. However, it can become invasive outside its native range, so gardeners should consult local regulations before planting.CC BY-SA 4.0