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PlantFiles: Mammillaria
Mammillaria albiarmata

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Family: Cactaceae (kak-TAY-see-ee) (Info)
Genus: Mammillaria (mam-mil-AR-ee-uh) (Info)
Species: albiarmata

Synonym:Mammillaria albiarmata
Synonym:Mammillaria coahuilensis subsp. albiarmata
Synonym:Mammillaria coahuilensis var. albiarmata

Category:
Cactus and Succulents

Height:
under 6 in. (15 cm)

Spacing:
3-6 in. (7-15 cm)
6-9 in. (15-22 cm)

Hardiness:
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

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

Bloom Color:
White/Near White

Bloom Time:
Mid Spring
Late Spring/Early Summer

Foliage:
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:
Non-patented

Propagation Methods:
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
Properly cleaned, seed can be successfully stored

Click thumbnail
to view:

By CactusJordi
Thumbnail #1 of Mammillaria albiarmata by CactusJordi

By CactusJordi
Thumbnail #2 of Mammillaria albiarmata by CactusJordi

Profile:

No positives
2 neutrals
No negatives

Gardeners' Notes:

RatingAuthorContent
Neutral CactusJordi On Aug 14, 2008, CactusJordi from El Cajon, CA wrote:

The biggest difference to Mamm. coahuilensis is that Mamm. albiarmata doesn't have that enormous tuberous root which M. c. has.

Jordi

Neutral Xenomorf On Mar 3, 2005, Xenomorf from Valley of the Sun, AZ (Zone 9b) wrote:

The differences between the 2 subspecies are:
'coahuilensis' is more prevalent than 'albiarmata' and has white flowers tinged with pink rather than pure white like that of the 'albiarmata' subspecies.
The 'albiarmata' subspecies also has denser spine coverage.



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