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, usually solitary, spineless cactus with blue-green, yellow-green or sometimes reddish-green stem. It is usually solitary, but sometimes forms groups with numerous, crowded shoots. The stem is globular, up to 3 inches (7.5 cm) tall and up to 5 inches (12.5 cm) diameter. From the cusp areoles, arises a tuft of soft, yellowish or whitish, woolly hairs. The flowers are pink or white to slightly yellowish, sometimes reddish, up to 1 inch (2.5 cm) long and up to 0.9 inch (2.2 cm) in diameter. They 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
Lophophora is more tolerant of soil types than its relatives and typically grows in areas that have decomposed limestone present in the soil. In cultivation, Lophophora does best in a 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, but must be allowed to dry out completely between waterings.
They 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 in a manner 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 shocking in order to initiate flowering.
Learn more at How to Grow and Care for Lophophora.
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