San Pedro Cactus "Trichocereus Pachanoi" (Echinopsis pachanoi) Seeds – Fast-Growing, Fragrant Night-Blooming, Cold-Hardy Columnar Cactus

Minimum: 10+ Seeds

San Pedro Cactus Seeds (Trichocereus pachanoi / Echinopsis pachanoi) — The Columnar Statement That Blooms at Night

San Pedro Cactus is fast-growing architectural drama: a tall columnar beauty from the Andes that grows with such enthusiasm... adding 1-2 feet yearly... that you'll watch its progress like a growing tree. The stems are deeply ribbed, colored in stunning blue-green that intensifies with sunlight, lined with short soft spines in geometric patterns. Once mature (around 4-6 feet tall), something magical happens: enormous intensely fragrant white flowers open at night, turning the garden spectacular. The blooms are tubular and striking, attracting moths and bats, lasting through the night before fading with morning. Worth staying awake for. Surprisingly, this tropical cactus is cold-hardy to Zone 8 (tolerating freezes to 15-20°F with protection), and more remarkably, it tolerates more moisture than most cacti... an Andean mountain adaptation. Easy to grow from seed. Low-maintenance once established.

Who Grows San Pedro Cactus Seeds?

Desert garden designers seeking architectural vertical drama. Gardeners in zones 8-10 wanting something genuinely different. Collectors of unusual succulents. Night gardeners. Container gardeners. Xeriscaping enthusiasts. Anyone understanding the best plants demand attention without work.

What This Andean Columnar Cactus Actually Is

Trichocereus pachanoi or Echinopsis pachanoi, San Pedro Cactus. Fast-growing columnar native to high Andes. Upright, often branching stems reaching 10-20 feet tall. Deeply ribbed blue-green stems with soft spines. Mature plants produce large fragrant white flowers blooming at night, typically summer. Flowers open at dusk, remain open into morning. Culturally significant in traditional Andean practices. Hardy Zone 8-10, tolerating 15-20°F. Surprisingly tolerant of moisture and variability. Grows 1-2 feet annually in warm season. Easy from seed or offsets.

In the Garden & Container

• Vertical Architecture: Tall columnar form creates dramatic living sculpture.
• Night Flowers: Large fragrant white blooms open at dusk.
• Xeriscape: Drought-tolerant once established, minimal watering.
• Container Grown: Excellent in large pots indoors.
• Specimen Plant: Single plant makes bold garden statement.
• Pollinator Draw: Night flowers attract moths and bats.
• Year-Round Interest: Blue-green stems beautiful always.

Growing San Pedro Cactus Seeds

• Start: Indoors in warm, bright conditions.
• Germination: Surface-sow on fast-draining cactus mix.
• Temperature: 70-75°F optimal.
• Light: Bright indirect initially, full sun once established.
• Zones: Hardy 8-10. Protect from hard frost.
• Soil: Fast-draining, never waterlog.
• Growth Rate: 1-2 feet per year.
• Sunlight: Full sun essential.
• Water: Occasional deep watering growing season, dry winter.
• Flowering: Blooms begin at 4-6 feet tall, usually summer.

Before You Close This Page

San Pedro cactus, fast-growing Andean columnar, Zone 8-10 hardy. Blue-green ribbed stems, soft short spines. Large fragrant white night-blooming flowers. Grows 1-2 feet yearly. 10-20 foot mature height. Container and landscape capable. Architecturally dramatic, low-maintenance, cold-tolerant. Tolerates more moisture than typical cacti. Easy from seed. The columnar statement that blooms after dark.