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T. knuthianus JJ 2439 Flowers very
early in January.
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Gymnocactus (Turbinicarpus) knuthianus
L732 Guadalcazar, San Luis Potosi, Mexico 1500m |
T. knuthianus seems to be a transitional species
between the
lophophoroides aggregate of the "true" Turbinicarpus
species, via
T. laui, and the species of the
saueri aggregate of the Gymnocactus species.
Description: Usually solitary plants
from San Luis Potosi in Mexico. They grow to 7-8cm in diameter and bear
their pink flowers early in January-March.
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Cultivation: It’s a fairly
easy species to cultivate and relatively fast growing. Need a very well drained soil. Requires strong sun to
part sun to develop good spinal growth and waterings should be rather infrequent to keep the plant
compact and not to become excessively elongated and unnatural in
appearance. keep dry in winter or when night temperatures remain
below 10° C, it is hardy to -4°C for a short period. Assure a good
ventilation.
Propagation: It can be reproduced both by
seeds and cuttings. Young seedlings are tiny and they need several years to reach
adult size, and require very careful watering.
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Scientific Name: Turbinicarpus
knuthianus (Boedeker)
John & Riha 1983
Conservation status: Listed in
CITES appendix I
Synonyms:
- Echinocactus knuthianus
Boed. 1930
- Thelocactus knuthianus
(Boed.) Borg 1937
- Thelocactus knuthianus
(Boed.) Marshall
(?)
- Thelocactus knuthianus (Boed.) H.
Bravo (?)
- Gymnocactus knuthianus (Boed.)
Backeb. 1951
- Turbinicarpus
saueri ssp. knuthianus (Boedeker) V. John & Riha
- Neolloydia knuthiana (Boed.)
E.F.Anderson 1986
- Neolloydia knuthiana
(Boed.) F.M.Knuth (?)
in BACKEB. & F.M.KNUTH
- Pediocactus knuthianus (Boed.)
J.J. Halda 1998
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 Origin:
Villar, San Luis Potosi, Mexico
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March: the first butterfly
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Cultivation and Mail Sale 
