Also known as Finger Cactus · Green-Fruit Nipple Cactus · Long Nipple Cactus
Mammillaria longimamma is a small, globular cactus with long, finger-like tubercles, producing yellow flowers and red fruit.
At-a-glance light, water, soil, and growing conditions from plant data
Prefers bright, indirect sunlight.
75% intensity
Can tolerate some direct morning sun but avoid intense afternoon sun which can scorch the plant.
Allow soil to dry out completely between waterings.
25% intensity
Reduce watering significantly in winter.
Well-draining cactus or succulent mix
50% intensity
Average room temperatures are suitable.
50% intensity
Protect from frost; prefers temperatures between 18-24°C during the day and cooler in winter for dormancy.
Feed during the growing season only.
25% intensity
Use a diluted, balanced liquid fertilizer once a month from spring to early fall.
Safety information from plant toxicity data
| Attribute | Value |
|---|---|
| Toxic for humans | No 0/5 intensity |
| Toxic for pets | No 0/5 intensity |
Non-toxic
Key traits and growing stats from plant data
Watering, pruning, propagation, and repotting details from plant data
Water thoroughly when the soil is completely dry, typically in spring and summer. Reduce watering significantly in fall and winter, allowing the soil to dry out between waterings.
Overwatering is a common cause of root rot for Mammillaria longimamma.
Pruning is generally not required for Mammillaria longimamma, as it naturally forms a clumping habit. If offsets become too crowded or if damaged parts need removal, use a sterile knife or scissors.
Pruning is best done in spring before active growth begins.
Propagate by offsets (pups) that form at the base of the plant. Gently detach a mature offset with a sterile knife and allow the cut surface to callus for a few days before planting in a well-draining cactus mix.
Rooting typically occurs within a few weeks.
Repot Mammillaria longimamma every 2-3 years, or when it outgrows its current container. Choose a pot slightly larger than the current one with drainage holes. Use a well-draining cactus or succulent mix.
Repot in spring before the active growing season.
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Monthly activity intensity for bloom and fruit across both hemispheres.
Flowering & fruiting calendar
Flowering & fruiting calendar
Photos of Cactus (Mammillaria longimamma)
Where Cactus (Mammillaria longimamma) is found
Density
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Common names and botanical synonyms
Botanical classification
| Rank | Name |
|---|---|
| Kingdom | Plantae |
| Division | Tracheophyta |
| Class | Magnoliopsida |
| Order | Caryophyllales |
| Family | Cactaceae |
| Genus | Mammillaria |
| Species | Mammillaria longimamma |
Similar in genus Mammillaria
Answers based on plant encyclopedia data
