Mammillaria hahniana

Mammillaria hahniana

Old lady cactus

A table displaying which months are best to sow, plant and harvest.
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Flowers
Flowers

Plant does not flower in January

Plant does not flower in February

Plant does not flower in March

Plant does flower in April

Plant does flower in May

Plant does not flower in June

Plant does not flower in July

Plant does not flower in August

Plant does not flower in September

Plant does not flower in October

Plant does not flower in November

Plant does not flower in December

  • Botanical name: Mammillaria hahniana
  • Common name: Old lady cactus
  • Family: Cactaceae
  • Plant Type: Cactus or succulent, House plant, Evergreen
Flower colour:

Pink

Foliage colour:

Green

Mammillaria is a genus of spiny cacti native to the desert regions of Central America, particularly Mexico. Plants usually form clusters of spherical or columnar stems, and bear funnel-shaped flowers.

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Known as the old lady cactus, Mammillaria hahniana forms globe-shaped stems covered in fine white spines and white down, from which a circle of pretty pink flowers appears in spring. It’s the perfect cactus for beginners and makes a fine addition to any cactus collection.

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For best results grow Mammillaria hahniana in cactus compost in containers in full sun. Water from mid-spring to summer only, and feed once a month with a special cactus fertiliser. Like all cacti growing in a temperate climate, it’s best grown as a houseplant but containers may be moved to a sunny, sheltered patio in midsummer.

How to grow Mammillaria hahniana

  • Plant size

    20cm height

    30cm spread

  • Aspect

    South facing, west facing

  • Sun exposure: Full sun
  • Soil type: Well drained / light / sandy

Plant calendar

A table displaying which months are best to sow, plant and harvest.
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Sow
Sow

Do Sow in January

Do not Sow in February

Do Sow in March

Do Sow in April

Do Sow in May

Do Sow in June

Do Sow in July

Do Sow in August

Do Sow in September

Do Sow in October

Do Sow in November

Do Sow in December

Plant
Plant

Do Plant in January

Do not Plant in February

Do Plant in March

Do Plant in April

Do Plant in May

Do Plant in June

Do Plant in July

Do Plant in August

Do Plant in September

Do Plant in October

Do Plant in November

Do Plant in December

Flowers
Flowers

Plant does not flower in January

Plant does not flower in February

Plant does not flower in March

Plant does flower in April

Plant does flower in May

Plant does not flower in June

Plant does not flower in July

Plant does not flower in August

Plant does not flower in September

Plant does not flower in October

Plant does not flower in November

Plant does not flower in December

Mammillaria hahniana and wildlife

Mammillaria hahniana has no particular known value to wildlife in the UK.

Is Mammillaria hahniana poisonous?

Mammillaria hahniana has no toxic effects reported.

No reported toxicity to:

No reported toxicity to Birds

No reported toxicity to Cats

No reported toxicity to Dogs

No reported toxicity to Horses

No reported toxicity to Livestock

No reported toxicity to People

Plants that go well with Mammillaria hahniana

Echinocactus grusonii
Plants

Echinocactus grusonii

Golden barrel cactus
Cactus plants to grow - Ferocactus pilosus
Plants

Ferocactus pilosus

Mexican fire barrel cactus