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Red Headed Irishman

Mammillariaspinosissima var. polyacantha

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Mammillaria spinosissima var. polyacantha by palmbob
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Family
Cactaceae (kak-TAY-see-ee)
Info
Genus
Mammillaria (mam-mil-AR-ee-uh)
Info
Synonym
Sun Exposure
Full Sun
Light Shade
Foliage

Unknown - Tell us

Height
6-12 in. (15-30 cm)
Spacing
12-15 in. (30-38 cm)
15-18 in. (38-45 cm)
18-24 in. (45-60 cm)
24-36 in. (60-90 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)
Danger
Plant has spines or sharp edges; use extreme caution when handling
Bloom Color
Pink
Bloom Time
Late Winter/Early Spring
Mid Spring
Other Details
Category
Cactus and Succulents
Water Requirements
Drought-tolerant; suitable for xeriscaping
Foliage Color

Unknown - Tell us

Where to Grow

Unknown - Tell us

Bloom Characteristics

Unknown - Tell us

Bloom Size

Unknown - Tell us

Other details

Unknown - Tell us

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 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
Regional

This plant is said to grow outdoors in the following regions:

Tampa, Florida

Houston, Texas

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Gardener's Notes:

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2
positives
0
neutral
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negative
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N
N
nippler
Spokane, WA | April 2006 | positive

Very cool plants can strive in any inviroment with proper care (and a sunlite) good for showing off and fun to maintain and grow

P
P
palmbob
Acton, CA (Zone 8b) | March 2004 | positive

Clumping, trailing cactus that obviously has a decent root system as there is one in Huntington gardens hanging out of the bottom of a po...Read More

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