Mammillaria petterssonii
A clustering cactus with spherical stems to 12cm round, with woolly axils and pointed tubercles bearing long, yellow-brown central spines surrounded by fine white radial spines. Produces pink or white funnel-shaped flowers, with dark pink mid-veins, in a ring around the crown of the stem from spring to summer
Size
Ultimate height
0.1–0.5 metresTime to ultimate height
2–5 yearsUltimate spread
0.1–0.5 metresGrowing conditions
Moisture
Well–drainedpH
Acid, Alkaline, NeutralColour & scent
| Stem | Flower | Foliage | Fruit | |
| Spring | Green | Pink White | ||
|---|---|---|---|---|
| Summer | Green | Pink White | ||
| Autumn | Green | |||
| Winter | Green |
Position
- Full sun
Aspect
South–facing or West–facing
Exposure
Sheltered Hardiness
H2Botanical details
- Family
- Cactaceae
- Native to the UK
- No
- Foliage
- Evergreen
- Habit
- Clump forming
- Genus
Mammillaria are spiny cacti with spherical or columnar stems, often in clusters, with many prominent tubercles, and funnel-shaped flowers usually in a ring near the apex of the stem
- Name status
Correct
How to grow
Cultivation
Grow under glass in a free draining cactus compost, in full light with shade from hot sun. Water freely during the growing season and sparingly in winter. See houseplant cacti and succulent cultivation for more details
Propagation
Propagate by seed sown at 19-24°C (66-75°F) in late winter or early spring, or by division, removing offsets in early spring
Suggested planting locations and garden types
- Houseplants
- Conservatory and greenhouse
Pruning
No pruning required
Pests
Diseases
Generally disease-free
Get involved
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