Trichocereus pachanoi (San Pedro Cactus)
Trichocereus pachanoi (San Pedro Cactus)
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Trichocereus pachanoi, commonly known as the San Pedro Cactus, is a fast-growing, columnar cactus admired for its striking blue-green stems and impressive architectural form. Native to the Andes Mountains of South America, this hardy evergreen succulent develops tall, ribbed columns with short spines, making it an outstanding feature plant for xeriscapes, rock gardens, and large containers.
Highly drought-tolerant and easy to grow, the San Pedro Cactus thrives in warm, sunny positions with excellent drainage. Mature plants may produce large, fragrant white flowers that open at night during summer, adding seasonal interest and attracting nocturnal pollinators. Its bold silhouette and low-maintenance nature make it a popular choice for contemporary and desert-style landscapes.

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Mature height
3–6m
Mature width
1–2m
Spacing
1–2m
Evergreen/Deciduous
Evergreen succulent
Foliage
Blue-green stems with white flowers
Flowering Period & Fruit Development/Harvest
Summer (on mature plants)
Sun tolerance
Full sun to partial shade
Maintenance
Very low maintenance; plant in well-drained soil, water sparingly once established, and protect from prolonged waterlogging
Root System
Shallow, fibrous root system suitable for rock gardens, xeriscapes, and large containers