Echinopsis pachanoi

San Pedro Cactus

A slender, blue-green Andean columnar cactus with big, fragrant white night flowers.

Quick answer: San Pedro cactus (Echinopsis pachanoi, also Trichocereus pachanoi) is a fast-growing columnar cactus that likes bright light, gritty well-draining soil and deep, infrequent watering. It blooms at night with large white flowers.

About the San Pedro cactus

San Pedro, Echinopsis pachanoi, is a columnar cactus native to the Andes of Ecuador and Peru. Its slim blue-green stems have a handful of shallow, rounded ribs and short, sparse spines, and they branch from the base into a graceful candelabra shape.

In warm weather it produces large, fragrant white flowers that open at night. It is popular as an architectural accent plant, a privacy screen, and a statement container plant.

At a glance

Light

Bright light to full sun. Introduce new plants to strong sun gradually.

Water

Water deeply, then let the soil dry completely. Reduce watering in winter.

Shape

Slender, branching columns that can grow many feet tall over time.

Soil

Fast-draining, gritty cactus mix in a pot with drainage holes.

Blooms

Large, fragrant white flowers that open at night.

Hardiness

Warm zones (roughly USDA 8b to 11). Protect from prolonged freezing weather.

San Pedro cactus for sale

Browse our San Pedro cacti in the shop, or message us for sizes and current availability.

San Pedro cacti are sold as ornamental and landscape plants only and are not for human consumption. Please follow the laws where you live.