# Horst's Discocactus (Discocactus horstii)

> Endemic to Minas Gerais, Brazil, Discocactus horstii is an exquisite miniature cactus renowned for its dark, depressed-globose stem crowned with a prominent woolly apical cephalium. At night, it produces remarkably large, nocturnal white blossoms with an intense, captivating fragrance. Highly susceptible to root loss and rot on its own roots, it is a prized collector's gem often grown grafted.

- **Scientific Name:** *Discocactus horstii*
- **Botanical Family:** Cactaceae
- **Care Difficulty:** Expert (4/5)
- **Cold Hardiness:** +10°C (USDA Zone 11b)
- **Pet Safety / Toxicity:** Pet-Safe (Non-toxic to cats and dogs)
- **Canonical URL:** https://sukulentler.com/en/species/discocactus-horstii
- **Markdown Source:** https://sukulentler.com/en/species/discocactus-horstii.md
- **Botanical Photo:** https://sukulentler.com/assets/images/articles/species_discocactus_horstii.webp?v=1794416486

## Light & Sun Exposure

Prefers bright, filtered sunlight; shield from scorching direct midday summer rays to avoid sunscald on its delicate epidermis.

## Watering Schedule & Method

Water moderately during active growth only when the substrate is completely dry. Keep strictly dry and in a warm room throughout winter to prevent root rot.

## Soil & Gritty Mix Formula

75% pumice, crushed lava, and coarse quartz sand + 25% sifted low-organic cactus soil (ultra-high drainage required).

## Cold Tolerance & Overwintering

+10°C (USDA Zone 11b)

## Propagation Methods

By fresh seed sown in warm, humid microclimates, or by grafting offsets taken from grafted specimens.

## Available Language Editions

- [TR: Horst Disko Kaktüsü (Discocactus horstii)](https://sukulentler.com/tr/turler/discocactus-horstii.md)
- [DE: Horsts Diskokaktus (Discocactus horstii)](https://sukulentler.com/de/arten/discocactus-horstii.md)
- [ES: Discocactus de Horst (Discocactus horstii)](https://sukulentler.com/es/especies/discocactus-horstii.md)