Mammillaria Spinosissima
Mammillaria spinosissima
succulentA densely spined mammillaria forming compact rosettes 3–4 inches tall with formidable sharp spination covering the entire body. It produces bright red or purple flowers in concentric rings and produces distinctive red seed pods. Named for its exceptionally thorny appearance, it is a prized collector's item.
Common Problems
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Care Guide
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Light
Full sun with 5–6 hours daily direct light. Bright indirect light acceptable in hot climates.
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Water
Water thoroughly during growing season when soil is completely dry. Minimize water in winter, watering only sparingly if at all.
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Soil
Very gritty, fast-draining cactus mix. Add extra perlite, pumice, or coarse sand to prevent moisture retention.
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Fertiliser
Light feeding monthly during growing season with diluted cactus fertilizer. Do not fertilize in winter.
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Temperature
Thrives at 60–80°F; requires cool, dry winters (40–50°F) for optimal flowering.
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Humidity
Very low humidity required (below 40%). Damp conditions invite rot.
Toxicity
check_circleSafe for Catscheck_circleSafe for Dogscheck_circleSafe for Children
Non-toxic but extremely sharp spines pose injury risk; handle with thick gloves.
Common Diseases
Common Pests
Seasonal Care
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Resume regular watering and feeding as growth picks up.
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Peak growing season. Water and feed regularly.
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Reduce watering as growth slows. Stop heavy feeding.
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Minimal watering and feeding. Protect from frost if needed.