Ferocactus cylindraceus (Syn. ferocactus acanthodes). Sunset: 8-24; USDA: 9-10. Full sun. Heat tolerant. Little or no water. Hardy to 20°F. Solitary barrel grows to 6' tall; 16' diameter. Bright red spines. Native to the eastern Mojave Desert and western Sonoran Desert Ecoregions in: Southern California, Nevada, Arizona, and Utah in the Southwestern United States; and Baja California, and Sonora state in Northwestern Mexico. It is found in gravelly, rocky, or sandy soils, in Creosote Bush Scrub and Joshua Tree Woodland habitats, from 60–1,500 metres (200–4,900 ft) in elevation.

Ferocactus echidne. USDA 9b-11. Full sun, heat tolerant, needs little water. Hardy to 24°F. Solitary barrel grows to 12" tall, 8" diameter. Yellow flowers. Origin: Central Mexico.

Ferocactus electracanthus. (Syn Ferocactus histrix, Echinocactus electracanthus) QUANTITIES OVER 1000 SHIPS IN 2-3 WEEKS.

Ferocactus emoryi USDA 9b-11. Full sun, heat tolerant, needs little water. Hardy to 24° F. Solitary barrel grows to 6' tall. Flower color varies from orange, red-orange, bright yellow. Origin: Baja Mexico.

Ferocactus glaucescens (Blue barrel). USDA: 9b-11. Full sun to light shade. Heat tolerant. Little to no water. Hardy to 28° F. Usually solitary barrel grows to 2.5' tall; 18" diameter. Origin: Eastern central Mexico.

Ferocactus hamatacanthus ssp. sinuatus (Turk's Head)  AKA Echinocactus hamatacanthus / Hamatocactus hamatacanthus. USDA: 8b-11. Full sun. Heat tolerant. Little or no water. Hardy to 16°F. Grows to 2' cluster. Origin: Texas, Mexico

Ferocactus herrerae (USDA: 9-11). Full sun. Heat tolerant. Little or no water. Hardy to 20°F. Solitary barrel grows to 6' tall; 16" diameter. Yellow to red flowers, large yellow fruit. Origin: Mexico

Ferocactus horridus. USDA 9b-11. Full sun, heat tolerant, needs little water. Hardy to 25° F. Flowers are golden yellow with reddish mid-stripe. Origin: Mexico (Southern Baja California).

Ferocactus hystrix. (Syn: Ferocactus electracanthus, Echinocactus electracanthus) USDA 9b-11. Curved golden spines, grey green body. Full sun to light shade, needs little water. Hardy to 25°F. Origin: Mexico.

Ferocactus latispinus. (Red spines / purple flowers ). Sunset: 11-13; USDA: 9b-11. Full sun to light shade, heat tolerant, needs little water. Hardy to 25°F. Origin: Mexico. 

Ferocactus macrodiscus. Sunset: 8-24; USDA: 9b-10. Full sun to light shade. Hardy to 25 F. Water sparingly summer, keep dry winter. Solitary barrel with a bluish green stem grows to 8-12" tall. Pink and white striped flowers. Origin: Mexico.

Ferocactus peninsulae. USDA: 9b-11. Hardy to 25°F. Full sun. Hardy to 25°F. Water sparingly summer, keep dry winter. Usually solitary barrel up to 3' tall, 18" diameter. Yellow flowers with orange red stripes. Thick red spines. Origin: Southern Baja California Mexico.

Ferocactus pottsii