Photo by Melody

PlantFiles: Rebutia
Rebutia mentosa

Family: Cactaceae (kak-TAY-see-ee) (Info)
Genus: Rebutia (ray-BEW-tee-uh) (Info)
Species: mentosa

Synonym:Rebutia mentosa subsp. mentosa
Synonym:Sulcorebutia mentosa
Synonym:Sulcorebutia augustinii
Synonym:Sulcorebutia markusii
Synonym:Sulcorebutia formosa

Cactus and Succulents

under 6 in. (15 cm)
6-12 in. (15-30 cm)

3-6 in. (7-15 cm)
6-9 in. (15-22 cm)
9-12 in. (22-30 cm)

USDA Zone 9b: to -3.8 C (25 F)
USDA Zone 10a: to -1.1 C (30 F)
USDA Zone 10b: to 1.7 C (35 F)
USDA Zone 11: above 4.5 C (40 F)

Sun Exposure:
Sun to Partial Shade
Light Shade

Plant has spines or sharp edges; use extreme caution when handling

Bloom Color:

Bloom Time:
Mid Spring

Unknown - Tell us

Other details:
Drought-tolerant; suitable for xeriscaping
Average Water Needs; Water regularly; do not overwater
Suitable for growing in containers

Soil pH requirements:
6.1 to 6.5 (mildly acidic)
6.6 to 7.5 (neutral)
7.6 to 7.8 (mildly alkaline)

Patent Information:

Propagation Methods:
From woody stem cuttings
Allow cut surface to callous over before planting
From seed; direct sow after last frost

Seed Collecting:
Allow unblemished fruit to ripen; clean and dry seeds
Unblemished fruit must be significantly overripe before harvesting seed; clean and dry seeds

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There are a total of 13 photos.
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No positives
2 neutrals
No negatives

Gardeners' Notes:

Neutral palmbob On Jul 6, 2006, palmbob from Acton, CA (Zone 8b) wrote:

According to the 2001 (reprinted 2004) publication The Cactus Family, by Edward Anderson, only two subspecies are currently (at least then) recognized: R mentosa ssp mentosa, and R mentosa ssp purpurea, the latter having a few less radials, but a few more central spines.

Neutral Xenomorf On Nov 15, 2005, Xenomorf from Valley of the Sun, AZ (Zone 9b) wrote:

Here's more synonyms of this plant of which some of them "might" become cultivars, varieties, subspecies or forms of the species in the future: Sulcorebutia purpurea var. unguispina, Sulcorebutia unguispina, Sulcorebutia torotorensis, Sulcorebutia santaginiensis, Weingartia markusii, Weingartia formosa & Weingartia torotorensis.


This plant has been said to grow in the following regions:

Chandler, Arizona
Phoenix, Arizona
Brentwood, California
Hesperia, California
Orange, California
Pleasant Hill, California
Ramona, California

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