Lophophora williamsii (Lem.) J.M.Coult.
Peyote, Peyōtl, Cactus Pudding, Devil's Root, Diabolic Root, Divine Cactus, Dry Whiskey, Dumpling Cactus, Indian Dope, Mescal Button, Mescal Buttons, Turnip Cactus, Whiskey Cactus, White Mule
Anhalonium lewinii, Anhalonium williamsii, Ariocarpus williamsii, Echinocactus williamsii, Lophophora echinata, Lophophora lewinii, Lophophora lutea, Mammillaria lewinii, Mammillaria williamsii, Oreocereus celsianus var. williamsii
Lophophora williamsii is a slow-growing cactus with spineless flattened spherical stems with a tuft of yellowish or whitish woolly hairs that arises from the areoles. It usually grows solitary but sometimes forms groups with numerous, crowded shoots. The stems are blue-green, yellow-green, or sometimes reddish-green stems. They are up to 3 inches (7.5 cm) tall and up to 5 inches (12.5 cm) in diameter. Flowers are pink or white to slightly yellowish, sometimes reddish, up to 1 inch (2.5 cm) long and up to 0.9 inches (2.2 cm) in diameter. They appear in summer and are open during the day.
USDA hardiness zones 10a to 11b: from 30 °F (−1.1 °C) to 50 °F (+10 °C).
How to Grow and Care
Lophophoras are more tolerant of soil types than their relatives and typically grow in areas with decomposed limestone present in the soil. However, in cultivation, they do best in fast-draining, mineral-based soil, which is about 2/3 sand.
Abundant water is beneficial in the summer months when the temperatures are over 90 °F (32 °C) and exposed to full sunlight for maximum growth. Still, they must be allowed to dry out completely between waterings.
Lophophoras should also be fertilized twice a year. Over-fertilizing will typically result in the Lophophora developing cracks and splitting.
At times, some Lophophoras will develop a corky material on the plant body if exposed to pesticides or insecticidal soap. This corky condition will usually heal very similar to human skin if the plants are exposed to full sunlight.
Lophophoras are free flowering in cultivation, and although they can withstand low temperatures during winter, they do not require a cold shock to initiate flowering.
Learn more at How to Grow and Care for Lophophora.
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