Light
Full Sun
The live `full_sun` operational enum is preserved; acclimate young or indoor-grown plants gradually to direct light and provide airflow behind hot glass.
Reference imageEchinopsis pachanoi
San Pedro Cactus
Echinopsis pachanoi care and identity summary
Echinopsis pachanoi is a columnar Echinopsis capable of becoming tall and branching. A tall branching columnar body, rib profile, areoles, spination, flowers and provenance should be evaluated together; juvenile proportions should not be confused with mature plants. Identification should not rely on a product label or one image; body form, ribs, areoles, spines, flowers and documented provenance should be evaluated together.1
Root, medium and watering
Use a stable pot that supports the columnar body and an airy, fast-draining mineral-forward mix; do not leave roots wet for prolonged periods. Do not use a fixed-day calendar; water in a controlled cycle after the root zone and mix have dried throughout, and extend the interval in cool or low-light periods. A dry-looking surface is insufficient; inspect the root zone as well. After repotting, allow injured roots time to dry and callus, and leave no standing water.
Light, temperature and observation
The live full_sun operational enum is preserved; acclimate young or indoor-grown plants gradually to direct light and provide airflow behind hot glass. Never test cold tolerance with wet roots; observe growth rate, wrinkling, colour changes and root health together. Grafting, low light or heavy feeding does not automatically change scientific identity.
Kew lists 10 synonyms; historical Trichocereus and Cereus combinations support search and literature retrieval but are not separately accepted species routes. Editorial content is limited to botanical identity and high-level toxicity, legal and safety cautions; it contains no preparation, consumption, extraction, dosage or procurement guidance.
Safety and conservation
The live toxic operational enum is preserved. Do not ingest; restrict access for children and pets. This content provides no use or preparation instructions. The conservation record is LC.2 The official IUCN-linked target is LC, replacing the former empty live value; the correction belongs only to the botanical conservation field. Documented legal nursery provenance should be preferred, and wild collection should not be encouraged.
References
- Plants of the World Online. “Echinopsis pachanoi (Britton & Rose) H.Friedrich & G.D.Rowley.” Royal Botanic Gardens, Kew. Accessed: 2026-08-05. https://powo.science.kew.org/taxon/urn%3Alsid%3Aipni.org%3Anames%3A88444-2 ↩
- IUCN Red List of Threatened Species. “Echinopsis pachanoi.” https://www.iucnredlist.org/species/152445/121474583 ↩
Watering
14-45 Days
Do not use a fixed-day calendar; water in a controlled cycle after the root zone and mix have dried throughout, and extend the interval in cool or low-light periods.
Soil
Fast-draining cactus and succulent mix
Use a stable pot that supports the columnar body and an airy, fast-draining mineral-forward mix; do not leave roots wet for prolonged periods.
Safety
Contact/Ingestion Risk
The live `toxic` operational enum is preserved. Do not ingest; restrict access for children and pets. This content provides no use or preparation instructions.
Difficulty
Moderate
Live operational care class: moderate.
Native Habitat
South Ecuador to Peru
South Ecuador to Peru.[^1] [^1]: Plants of the World Online. “Echinopsis pachanoi (Britton & Rose) H.Friedrich & G.D.Rowley.” Royal Botanic Gardens, Kew. Accessed: 2026-08-05. https://powo.science.kew.org/taxon/urn%3Alsid%3Aipni.org%3Anames%3A88444-2 [^2]: IUCN Red List of Threatened Species. “Echinopsis pachanoi.” https://www.iucnredlist.org/species/152445/121474583
Frequently Asked Questions
What is the accepted name?
Echinopsis pachanoi (Britton & Rose) H.Friedrich & G.D.Rowley.
What is its native range?
South Ecuador to Peru
What is its conservation record?
LC; it is evidence about wild populations, not commercial inventory.
How often is it watered?
There is no fixed interval; water in a controlled cycle after the mix and root zone have dried throughout.
What medium is suitable?
Use a stable pot that supports the columnar body and an airy, fast-draining mineral-forward mix; do not leave roots wet for prolonged periods.
What light is suitable?
The live `full_sun` operational enum is preserved; acclimate young or indoor-grown plants gradually to direct light and provide airflow behind hot glass.
Are synonyms separate routes?
No; they are nomenclatural names related to the same species in the maintained backbone.
Does a product photo prove identity?
No; morphology, flowers and documented provenance must be evaluated together.
