Trichocereus bridgesii – Penis Cactus

The plant grows as a single or branching column with a diameter of 23 inches and vertical ridges running along its body. It features small areoles with fine spines arranged in neat rows along the stem, giving it a structured, geometric appearance. The epidermis remains forest green throughout its life, and the stem hardens slightly as it matures.

Trichocereus bridgesii produces white or pale yellow flowers that bloom in late spring and early summer, typically opening at night. The flowers are tubular and fragrant, appearing near the top of mature stems. In indoor conditions, flowering occurs less frequently than in outdoor cultivation and requires several years of growth to begin.

It tolerates dry heated air found in most homes and grows well in direct sun, though it will scorch in south-facing windows during peak afternoon heat. Rotate it regularly for even growth on all sides. Move it outside in summer and provide cover from rain, as it is sensitive to prolonged moisture. You can leave it up to ten days without water. The plant is a slow-grower and rarely needs pruning. It should be kept on a high shelf or out of reach of small children and pets, as it is dangerous if ingested.

Water it every 1014 days during the growing season, letting the soil dry completely between waterings; reduce to once monthly in winter.

Trichocereus bridgesii grows well in fast-draining cactus or succulent soil mixed with coarse sand or perlite.

It prefers temperatures between 5075F and tolerates brief dips near freezing; avoid cold drafts from AC or heaters.

Trichocereus bridgesii is a slow-grower that rarely needs pruning; fertilize lightly once or twice during spring and summer.

It is hardy in USDA zones 1011 and survives brief frosts down to 32F. It grows outdoors year-round in southern California, Arizona, southern Florida, Hawaii, and parts of Texas.

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What This Plant Symbolizes: powerful and protective spirit, resilience and endurance, women’s pleasure, uniqueness and individuality

A Thoughtful Gift For: a plant collector or cactus enthusiast, a friend with a good sense of humor, cactus lovers seeking unusual specimens, the independent gardener, someone who values low-maintenance plants, an adult who appreciates sculptural dcor

Q: How often should I water Trichocereus bridgesii?
A: Every 1014 days during growing season, letting soil dry completely between waterings. In winter, reduce to once a month.

Q: Does it need a lot of light indoors?
A: Trichocereus bridgesii needs direct sun or bright indirect light. South-facing windows may cause scorching, so rotate it regularly for even growth.

Q: Will Trichocereus bridgesii flower indoors?
A: Flowering is possible but takes several years and occurs less often indoors than outdoors. White or pale yellow flowers bloom in late spring and early summer.

Q: Is it safe around pets and children?
A: No. Trichocereus bridgesii should be kept on a high shelf out of reach of pets and small children, as it is dangerous if ingested.

Q: Can I grow Penis Cactus outside?
A: Move it outdoors during summer and cover it from rain. It grows year-round outside in USDA zones 1011 (southern California, Arizona, southern Florida, Hawaii, parts of Texas).

Q: How do I propagate Penis Cactus?
A: Cuttings taken in spring or summer root in fast-draining soil within 34 weeks. Let cuts dry for 24 hours before planting.