Facheiroa pilosa. Origin: Brazil

Facheiroa squamosa. Treelike growth to 20'. Origin: Brazil

Facheiroa ulei

Ferocactus acanthodes v. albispinus

Ferocactus acanthodes v. eastwoodiae

Ferocactus acanthodes v lecontei

Ferocactus alamosanus

Ferocactus californicus. A rare natural hybrid of Ferocactus peninsulae & Ferocactus rectispinus. Full sun, heat tolerant, needs little water. Hardy to 20°F. Solitary barrel grows to 5' tall; 20" diameter. Long curved red spines. Brownish yellow to orange flowers. Origin: California.

Ferocactus chrysacanthus. Full sun, heat tolerant, needs little water. Hardy to 20° F. Solitary barrel grows to 3' tall; 20" diameter. Curved golden spines. Brownish yellow or orange flowers. Origin: Baja California Mexico.

Ferocactus coloratus

Ferocactus covillei. (Syn: 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 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 Arizona, California, northern Mexico.

Ferocactus diguetii. Sunset: 8-24; USDA: 9-10. Full sun, heat tolerant, needs little water. Hardy to 22°F. Solitary barrel grows to 12' tall; 3' diameter. Golden spines. Reddish flowers. Origin: Baja California Mexico.

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 echidne v. rhodanthus

Ferocactus electracanthus

Ferocactus emoryi (Syn: Ferocactus covillei)

Ferocactus flavovirens

Ferocactus fordii. Red grey spines, petite barrel.

Ferocactus fordii v. borealis.  USDA 9b-11. Full sun, heat tolerant, needs little water. Hardy to 25° F. Magenta flowers. Origin: Mexico (Pacific coast of Baja California)

Ferocactus gatesii. USDA 9b-11. Full sun, heat tolerant, needs little water. Hardy to 25° F. Flowers are red or golden yellow with reddish mid-stripe. Origin: 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 gracilis. USDA 9b-11. Full sun, heat tolerant, needs little water. Hardy to 22°F. Solitary barrel grows to 5' tall; 12" diameter. Red spines. Golden yellow flowers. Origin: Baja California Mexico.

Ferocactus gracilis v. coloratus. USDA 9b-11. Full sun, heat tolerant, needs little water. Hardy to 22°F. Solitary barrel grows to 5' tall; 12" diameter. Red spines. Orange/red flowers. Origin: Baja California 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 horridus v. brevispinus

Ferocactus horridus v. longispinus. USDA 9b-11. Full sun, heat tolerant, needs little water. Hardy to 25° F. Origin: Mexico (Southern Baja California).

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