Photo: Chhe, Wikipedia
Ladyfinger Cactus
Mammillaria elongata
A beginner-friendly cactus that forms dense clusters of slender green stems covered in golden spines.
Plant profile updated February 15, 2025
Quick Facts
LightFull sun to partial shade
WaterTypical cactus needs
Maximum Height8 inches / 20 cm
Maximum Width12 inches / 30.5 cm
HardinessUSDA Zone 9a
Minimum Temperature20°F / -6.7°C
PropagationOffsets and stem cuttings
ToxicityGenerally non-toxic
DormancyWinter dormant
Flower ColorYellow to pink
Identification
StemsSlender finger-like stems grow in dense clusters.
SpinesShort golden to copper spines cover each stem.
GrowthOffsets steadily enlarge the cluster.
FlowersSmall pale yellow or pink flowers appear near stem tips.
How to Grow Ladyfinger Cactus
Light
Provide at least four hours of direct sunlight.
Water
Water thoroughly, then let the soil dry completely.
Soil
Use a gritty cactus mix with excellent drainage.
Temperature
Protect from temperatures below 20°F (-6.7°C).
Winter Care
Water sparingly during winter dormancy.
Handling
Use nitrile gloves and silicone-tipped tongs.
Propagation
- Separate a healthy offset with tongs.
- Let the cut surface callous for several days.
- Plant in dry well-draining cactus soil.
- Water sparingly after roots begin forming.
Scientific Classification
| Kingdom | Plantae |
|---|---|
| Order | Caryophyllales |
| Family | Cactaceae |
| Genus | Mammillaria |
| Species | Mammillaria elongata |
Note: The common Copper King form has especially warm orange or copper-colored spines.
