Bellissime piante completamente ricoperte da lunghe spine bianco brillante.
Scientific name: Thelocactus macdowelii (Rebut ex Quehl) C. Glass, Published in: Cact. Suc. Mex. 14: 4 (1969).
Origin: Mexico (Nuevo León, Coahuila)
| Description: Solitary cactus that can in time grow several heads. |
Stem: Light green, up to 10 cm tall and 10 cm wide.
Ribs: Indistinct divided in conical tubercles.
Radial spines: Glassy white acicular, usually between 15 and 25.
Central spines: 2-4 white or light yellow.
Flowers: Funnel-shaped, pink (or magenta) with a yellow centre and about 6 cm wide Not self-fertile.
Blooming season: Usually flowers only once in mid to late winter (or early spring) but sometimes it can do a 2nd round like it happens with all seasonal bloomers once in a while.
Fruit: The Green and shiny. Hairless and spineless.
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Cultivation: It is a summer grower species and does not require any special treatment. Water regularly from Spring to Autumn, but do not overwater. Requires full sun or light shade and careful watering to keep plant compact with strong spines. It will stand as much sun as you can give it, as long as there is good air circulation.