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Accepted Scientific Name: Discocactus horstii Buining & Bredero
Kakteen (H. Krainz) 53: CVIf 1973 Krainz
Origin and Habitat: Garden origin.
Discocactus horstii Buining & Bredero
Kakteen (H. Krainz) 53: CVIf 1973
- Discocactus horstii Buining & Bredero
- Discocactus horstii f. cristatus hort.
- Discocactus horstii f. variegatus hort.
- Discocactus woutersianus Bredero & M.van de Broek
Description: This is one of the most precious crested cacti that on rare occasions develops. Crested plants often results in several flowers appearing at one time along the line meristem. It is best maintained by grafting it on to a columnar stock (e.g. Trichocereus, Harrisia, Myrtillocactus).
Subspecies, varieties, forms and cultivars of plants belonging to the Discocactus horstii group
- Discocactus horstii Buining & Bredero: has disc shaped stems 5-6 cm in diameter with 12-22 narrow ribs. Spines inconspicuous 8-10, 2-4 mm long, recurved backwards pectinate. Distribution: Minas Gerais, Brazil
- Discocactus horstii f. cristatus hort.: Crested form.
- Discocactus horstii f. variegatus hort.: Variegated form.
- Discocactus woutersianus Bredero & M.van de Broek: is a natural hybrid between Discocactus horstii and Discocactus insignis. Distribution: Serra do Barrao, Minas Gerais, Brazil.
Cultivation and Propagation: It is rather difficult to grow and frost tender, should be kept at above 15° C if grown on its own roots (8°C if grafted) need full sun or afternoon shade. Young seedlings are generally grafted because they are slow growing and very rot prone when kept on their own roots and though they can’t endure long stretches of total dryness, too much water will rot them, as their weak root systems tend to be inefficient at sucking up water from wet soil. They generally resent being repotted and can take a long time to establish.
Propagation: Almost always by grafting.
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