Plants in genus coryphantha
Coryphantha cornifera
Coryphantha cornifera, also known as the Rhinoceros Cactus, is a cylindrical succulent native to Mexico. It can grow up to 6 inches tall and is known for its slow growth and winter dormancy. The plant produces yellow flowers, occasionally tinged with red, and thrives in bright, direct sunlight. It is frost-tolerant down to 19°F and is suitable for hardiness zones 9a to 11b.
Coryphantha recurvata
Coryphantha recurvata is a small barrel cactus native to Southern Arizona, thriving in humid, rainy conditions. It forms offsetting mounds with yellow spines and small yellow flowers in mid-summer, making it a charming addition to cactus collections.
Coryphantha elephantidens
Coryphantha elephantidens, native to Mexico, is a large, depressed-globular cactus with spines sometimes tipped with black. It produces whitish to pink or yellow self-fertile flowers and can clump or have multiple growth points. This cactus thrives in full sun to light shade and requires good drainage, with minimal watering in winter.
Coryphantha greenwoodii
Coryphantha greenwoodii, also known as the Elephant's Tooth, is a small cactus native to Veracruz, Mexico. It features spherical growth and yellow flowers, thriving in full sun to light shade. This cactus requires good drainage and is hardy to 27°F, making it suitable for warmer climates.
Coryphantha calipensis
Coryphantha calipensis is a low branching cactus that forms clusters, with distinct young and mature forms. It features radial spines in its youth and develops central spines and long tubercles with age. This cactus flowers in summer and takes 4-5 years from seed to bloom.