# White Spined Copiapoa (Copiapoa krainziana)

> Endemic to the rugged San Ramón valley in Chile's hyper-arid Atacama Desert, this iconic cactus is famed for its dense coat of soft, curved, silvery-white spines that shield the dark stem from intense UV rays. In habitat, it survives by harvesting moisture from coastal sea fogs known as camanchaca, eventually clustering into striking mounds. During the growing season, delicate pale yellow, funnel-shaped flowers emerge from woolly apical cushions.

- **Scientific Name:** *Copiapoa krainziana*
- **Botanical Family:** Cactaceae
- **Care Difficulty:** Expert (4/5)
- **Cold Hardiness:** -2°C (USDA Zone 9b) for brief periods if kept bone dry; ideal winter resting temperature is between 5°C and 10°C in low humidity.
- **Pet Safety / Toxicity:** Pet-Safe (Non-toxic to cats and dogs)
- **Canonical URL:** https://sukulentler.com/en/species/copiapoa-krainziana
- **Markdown Source:** https://sukulentler.com/en/species/copiapoa-krainziana.md
- **Botanical Photo:** https://sukulentler.com/assets/images/articles/species_copiapoa_krainziana.webp?v=1794610874

## Light & Sun Exposure

Requires full sun to intense bright filtered light for at least 6-8 hours daily. Dense spine development depends directly on high light levels; indoors, place on a sunny south-facing windowsill or under powerful grow lights.

## Watering Schedule & Method

Extremely susceptible to overwatering and rot. Practice a strict soak-and-dry regimen only during the spring and autumn growing periods; withhold water almost completely during winter dormancy and mid-summer heat dormancy.

## Soil & Gritty Mix Formula

70% Pumice and Lava rock + 15% Zeolite/Coarse Quartz Grit + 15% Low-organic Cactus Compost (ultra-porous, fast-draining mineral mix).

## Cold Tolerance & Overwintering

-2°C (USDA Zone 9b) for brief periods if kept bone dry; ideal winter resting temperature is between 5°C and 10°C in low humidity.

## Propagation Methods

Seed sowing in sterile mineral mix (recommended) or rooting basal offsets (pups) in spring after callusing for 1-2 weeks.

## Available Language Editions

- [TR: Beyaz Dikenli Krainziana Kaktüsü (Copiapoa krainziana)](https://sukulentler.com/tr/turler/copiapoa-krainziana.md)
- [DE: Weißdorniger Copiapoa-Kaktus (Copiapoa krainziana)](https://sukulentler.com/de/arten/copiapoa-krainziana.md)
- [ES: Copiapoa de Espinas Blancas (Copiapoa krainziana)](https://sukulentler.com/es/especies/copiapoa-krainziana.md)