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Discocactus horstii
Scientific Name: Discocactus horstii Buining & Brederoo
Family: Cactaceae
Listed in CITES Appendix 1
Discocactus  horstii
Discocactus horstii graft at Bach's Cactus Nursery
Recommended Temperature Zone:
USDA: 10b-12

Frost Tolerance: Should be kept at above 60 F (15 C) if grown on its own roots

Minimum Avg. Temperature: 60F (15C)

Sun Exposure: Full sun or afternoon shade

Origin: Brazil (Minas Gerais)

Growth Habits: Solitary globose cactus, up to 3 inches in diameter (8 cm); up to 20 prominent ribs; 8 to 10 light colored spines in a comb like arrangement, 0.2 inch long (5 mm)

Watering Needs: Very rot-prone if grown on its own roots.

Propagation: Seeds, generally grafted

Discocactus horstii is one of the most researched cactus. It is generally grafted because it is slow growing and very rot prone when kept on its own roots. It was named after the Brazilian collector Leopoldo Horst, and his wife Melita, who discovered the plant in the sixties.

Discocactus  horstii

Discocactus  horstii

Blooming Habits:
The lightly scented flowers are 3 inches long (7.5 cm), 2.4 inches in diameter (6 cm). They come in profusion in summer, out of a cephalium covered with white wool and bristles.

Fruiting Habits:

Cacti and Succulents

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Desert-Tropicals is dedicated to provide gardening advice, gardening ideas, and information about flower of all kind for landscape and collections. We try to check carefully the identification of the plants on the illustrations as well as the other information from the page, but occasionally errors do occur. if you notice anything that needs to be changed please contact us. Thanks.

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