Winter's Pincushion Cactus (Mammillaria winterae)

Winter's Pincushion Cactus

Mammillaria winterae

Tiny, globular cactus with delicate pink blooms, a compact desert gem. Succulent ornamental; common name: Winter's Pincushion Cactus.

Full sun
0–1/week
Beginner
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Plant Needs

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Sunlight Full direct sunlight for most of the day; tolerate partial shade during extreme summer midday heat
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Watering Water deeply only when soil is completely dry; avoid overwatering to prevent root rot
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Temperature Thrives in warm arid conditions; tolerate brief light frost (≥5°C) during winter dormancy
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Characteristics

  • Leaf: Modified into sharp, radiating spines from raised tubercles; no true foliage leaves
  • Flower: Funnel-shaped pale pink to white blooms circling the cactus crown
  • Stem: Globular green stem covered in raised tubercles with spine clusters
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Care Guide

Watering

Water when soil is fully dry (every 7–10 days)

Fertilization

Diluted low-nitrogen cactus fertilizer once monthly. Do not fertilize during winter dormancy

Eggshell powder topdress:Crush dried eggshells into fine powder; sprinkle lightly on soil surface every 3 months; avoid direct contact with cactus tubercles
Pruning
  • Gently remove dead, dried spines or spent flower blooms with tweezers
  • Separate offset pups in spring for propagation
  • Trim soft, rotting tissue immediately to prevent spread of decay
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Toxicity

Warning: this plant may be toxic.

Pets & Humans

Pets: ASPCA confirmed non-toxic to cats

Humans: No known toxicity to humans

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Garden Uses & Culture

Culture: N/A

Usage: Ornamental succulent for rock gardens, container displays, and desert-themed arrangements