Old Lady Cactus

Mammillariahahniana

Family
Cactaceae (kak-TAY-see-ee)
Genus
Mammillaria (mam-mil-AR-ee-uh)
Species
hahniana (hahn-ee-AY-na)
Synonym
Mammillaria hahniana subsp. hahniana
Mammillaria hahniana var. hahniana
Sun Exposure
Sun to Partial Shade
Light Shade
Height
under 6 in. (15 cm)
Spacing
3-6 in. (7-15 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)
Danger
Plant has spines or sharp edges; use extreme caution when handling
Bloom Color
Pink
Bloom Time
Late Spring/Early Summer
Other Details
Category
Cactus and Succulents
Water Requirements
Drought-tolerant; suitable for xeriscaping
Foliage Color
Where to Grow
Can be grown as an annual
Bloom Characteristics
Bloom Size
Other details
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
By grafting
Seed Collecting
Allow unblemished fruit to ripen; clean and dry seeds
Properly cleaned, seed can be successfully stored
Regional

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

Queen Creek, Arizona

Siloam Springs, Arkansas

Castro Valley, California

Templeton, California

Vista, California(9 reports)

Cantonment, Florida

Lake Mary, Florida(2 reports)

Henderson, Nevada

Austin, Texas

Brady, Texas

South Jordan, Utah

show all

Featured Videos

Gardener's Notes:

3
positives
3
neutrals
0
negative
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A
A
Siloam Springs, AR | October 2008 | neutral

I bought this plant yesterday at the low's garden center out of the 200 cactus's they had this one stood out the most it was so small and...Read More

T
Vista, CA | December 2005 | positive

Harry Johnson developed cultivars of m. hahniana and sold them by mail order in the early-to-mid 1900's.

When Harry's n...Read More

X
Phoenix, AZ (Zone 9b) | March 2005 | neutral

The differences between the subspecies are:
--ssp. hahniana; has only 1 central spine and 20-30 radial spines per areole. Flowers ...Read More

H
H
Castro Valley, CA (Zone 9a) | February 2005 | positive

Beautiful globular cactus is covered with white spines and dense white hair. Rings of vivid carmine flowers in Summer create dramatic con...Read More

C
Henderson, NV (Zone 9b) | February 2005 | positive

Contrary to the hardiness detail above, this cactus can survive to 25F. It is easy to grow, but rot prone if root is wet in winter. Flo...Read More

E
Weyburn, SK | April 2001 | neutral

This little cactus is very easy to grow. The round body has silky hairs and tiny white "cotton balls' all over it. The little pink flower...Read More

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