Cactus seeds: C
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Akersia roseiflora (Syn. Cleistocactus samaipatanus). USDA: 9b-10. Hardy to 25° F. Full sun to light shade. Trailing or erect slender columns, 3 to 5' long. Does better with afternoon shade in hotter locations. Regular water during summer, less water in winter. Lilac pink flowers. Origin: Bolivia, Peru
Carnegia gigantea (Saguaro). Sunset: 11-13,18-21; USDA: 9-10. Full sun. Heat tolerant. Little water. Hardy to 15°F. Grows to 50' tall. Origin: Sonoran desert of southwestern USA and Sonora state in Mexico.
Castellanosia caineana
Cephalocereus senilis (Old Man of Mexico). Sunset: 11-13,21-24; USDA: 9-10. Hardy to 15° F for short periods. Light shade, in hot desert gardens. Slowly grows to 45' tall, 18" in diameter. Little water summer, no water winter. Whitish pink flowers. Origin: Mexico.
Cephalocleistocactus pallidus. USDA: 9b-10. Hardy to 32° F Light shade, in hot desert gardens. Shrubby growth to 10' tall, 1.4 " in diameter. Generous water summer, little water winter. Origin: Bolivia.
Cephalocleistocactus ritteri (Cleistocactus ritteri). USDA: 9b-10. Hardy to 32° F Light shade in hot desert gardens. Shrubby growth to 3' tall, 1.2 " in diameter. Generous water summer, keep dry winter. Origin: Bolivia.
Cereus aethiops. USDA: 9b-11. Hardy to 32° F Full sun. Columnar, branching growth to 7' tall, 5' spread. Little water, needs good drainage. Origin: Brazil, Uruguay, and northern Argentina.
Cereus alacriportanus
Cereus braunii. Hardy to 32° F, protect friom frost. Full sun. Columnar, branching growth to 10' tall. Moderate water summer, dry during winter. Huge white flowers 11" long. Origin: Bolivia.
Cereus chalybaeus
Cereus fernambucensis
Cereus forbesii (Cereus validus). USDA: 9b-11. Hardy to 32° F, protect friom frost. Full sun. Columnar, branching growth to 14' tall, 5" in diameter. Moderate water summer, light water in winter. White nocturnal flowers, up to 3 inches long. Origin: Eastern Bolivia, Argentina.
Cereus hexagonus
Cereus hildmannianus. Sunset:12-13,16,17,21-24; USDA: 9-11. Full sun. Heat tolerant. Moderate water, fertilize in summer. Hardy to 26 deg. F. Grows to 20' tall. Origin: Southeastern Brazil, northern Argentina.
Cereus hildmannianus v. uruguayanus
Cereus jamacaru. USDA: 9b-11. Hardy to 32° F, protect friom frost. Full sun. Columnar, treelike to 30' tall, truck 18" in diameter. Regular water summer, light water in winter. White nocturnal flowers, green outside layer. Origin: Brazil.
Cereus pachyrhizus
Cereus peruvianus. Sunset:12-13,16,17,21-24; USDA: 9-11. Protect from hard freeze. Full sun. Heat tolerant. Moderate water, fertilize in summer. Treelike Growth to 20' tall. Large white nocturnal flowers, outer petals with pink or red highlights. Origin: Peru.
Cereus peruvianus monstrosus. Sunset: 12-13,16,17,21-24; USDA: 9-11. Full sun. Heat tolerant. A mutated from of cereus peruvianus. Moderate water, fertilize in summer. Hardy to 26 deg. F. Grows to 15' tall. Origin: Peru.
Cereus peruvianus v twisto. 'Twisto Cereus' A form of peruvianus monstrosus, no cresting, instead a nice spiral growth. Sunset:12-13,16,17,21-24; USDA: 9-11. Full sun. Heat tolerant. Grows rapidly with regular water and rich soil, fertilize in summer. Grows to 20' tall. Origin: A Cereus peruvianus clone discovered and used in Southwest and Western landscapes.
Cereus pitaya
Cereus species mix
Cereus xanthocarpus
Chamaecereus silvestrii hybrid (Peanut Cactus). Sunset: 16,17, 21-24; USDA: 10. Hardy to 20° F. Light shade in desert gardens. Trailing succulent. Regular water summer, no water in winter. Plants have bright flowers from yellow to purple. Origin: Argentina.
Chileorebutia aerocarpa (Syn: Eriosyce aerocarpa)
Cintia knizei
Cleistocactus baumannii. Red tubular flowers, attracts hummingbirds.
Cleistocactus bruneispinus
Cleistocactus buchtienii
Cleistocactus ianthinus
