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PlantFiles: Mammillaria
Mammillaria gigantea

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Family: Cactaceae (kak-TAY-see-ee) (Info)
Genus: Mammillaria (mam-mil-AR-ee-uh) (Info)
Species: gigantea (jy-GAN-tee-uh) (Info)

Synonym:Mammillaria hamilton-hoytea
Synonym:Mammillaria hamiltonhoytea
Synonym:Mammillaria armatissima
Synonym:Mammillaria ocotillensis
Synonym:Mammillaria hastifera

Category:
Cactus and Succulents

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

Spacing:
6-9 in. (15-22 cm)
9-12 in. (22-30 cm)

Hardiness:
USDA Zone 9a: to -6.6 C (20 F)
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

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

Bloom Color:
Pale Pink
Pink
Red
Chartreuse (Yellow-Green)

Bloom Time:
Mid Summer

Foliage:
Succulent

Other details:
Drought-tolerant; suitable for xeriscaping
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:
By dividing rhizomes, tubers, corms or bulbs (including offsets)
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
Properly cleaned, seed can be successfully stored

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There are a total of 8 photos.
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Profile:

1 positive
1 neutral
No negatives

Gardeners' Notes:

RatingAuthorContent
Neutral Xenomorf On Mar 8, 2005, Xenomorf from Valley of the Sun, AZ (Zone 9b) wrote:

Flowers are "yellowish green" according to 'The Cactus Family' book.
Like in this link
http://www.koehres-kaktus.de/galerie/kakteen/k_l_m_img/Mammi...

Other valid synonyms are Neomammillaria hamiltonhoytea & Neomammillaria gigantea.

Positive palmbob On Oct 5, 2004, palmbob from Acton, CA (Zone 8b) wrote:

not particularly gigantic, but perhaps referring to a floral part... this is a med sized Mammillaria, either solitary or slowly clumping with anywhere from pale pink all the way to red flowers in summer. Variable spines- some long, some shorter, but densely spaced and straight

Regional...

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

Mesa, Arizona



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