Scientific Name
Stenocereus thurberi (Engelm.) Buxb.
Common Name(s)
Organ Pipe Cactus, Pitayo Dulce (Spanish)
Synonym(s)
Cereus thurberi, Lemaireocereus thurberi
Scientific Classification
Family: Cactaceae
Subfamily: Cactoideae
Tribe: Pachycereeae
Genus: Stenocereus
Etymology
The specific epithet "thurberi" (pronounced "THUR-ber-eye") honors George Thurber (1821-1890), a United States pharmacist and botanist.
Origin
Stenocereus thurberi is native to Mexico and the United States.
Description
Stenocereus thurberi is a cactus with several narrow branches that rise vertically, growing from a short trunk just above ground level. It takes 150 years to reach maturity. The branches can grow up to 16 feet (4.9 m) tall and 6 inches (15 cm) in diameter, and have 12 to 19 ribs that bear dark brown to black spines that turn gray with age. They rarely branch but rather grow annually from the tip of the last growth.
A mature plant can reach a width of 12 feet (3.7 m) and produce flowers annually. The flowers are white with a purple or pink tint and open at night, and close in the morning. They are funnel-shaped, usually appear from late spring to early fall, and can reach a length of 4 inches (10 cm) and a diameter of 3 inches (7.5 cm). The fruits are about the size of a tennis ball, bear deciduous spiny areoles, and contain sweet pulp and glossy seeds.
Hardiness
USDA hardiness zones 9b to 11b: from 25°F (-3.9°C) to 50°F (10°C).
How to Grow and Care
Like most cacti, Cereus is a fairly low-maintenance and hardy plant. Ensure they receive sufficient water without becoming waterlogged, especially during the summer, and fertilize them for optimal results. If the roots have become black or overly soft, the cactus could be experiencing root rot. Cut away the affected parts and replant them. Most gardeners interested in cacti should be able to cultivate these without much problem.
It may become necessary to repot your Cereus if it outgrows its container. If so, ensure the soil is dry and remove the pot. Knock away old soil, prune out rotted or dead roots, then replace it in a new pot and backfill it with fresh soil. Ensure that you do not overwater cacti planted in new pots, as this can lead to root rot. It should be left dry for about a week and then watered lightly.
These cacti propagate quite easily from cuttings. Simply sever a branch and replant in moist, well-drained soil.
See more at How to Grow and Care for Cereus.
Links
- Back to genus Stenocereus
- Succupedia: Browse succulents by Scientific Name, Common Name, Genus, Family, USDA Hardiness Zone, Origin, or cacti by Genus
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