Description
Mammillaria gracilis var. albata ‘Arizona Snowcap’ is a delightful dwarf cactus covered in dense clusters of pure white spines that give it a frosted, snow-like appearance. This charming, compact species produces small, creamy white flowers and forms clumps over time, making it a favourite among collectors and cactus enthusiasts.
- Full Botanical Name: Mammillaria gracilis var. albata ‘Arizona Snowcap’
- Common Names: Arizona Snowcap Cactus, Thimble Cactus, White Thimble Cactus
- Country and/or Region of Origin: Mexico (Hidalgo region)
- Growing Conditions in Native Habitat: Grows on rocky limestone slopes and arid plains with intense sunlight and well-draining soil
- Care Guide:
- Light: Prefers bright, direct sunlight; at least 6 hours per day promotes healthy growth and flowering
- Ideal Room: Conservatory, sunny windowsill, or greenhouse
- Feeding: Cactus fertilizer every 6–8 weeks in spring and summer; no feeding during winter dormancy
- Humidity: Low humidity preferred; ensure good airflow to prevent rot
- Ideal Temperature: 18–30°C; protect from frost below 10°C
- Watering: Water deeply but infrequently; allow soil to dry completely before watering again; reduce watering in winter
- Pet/Child Safe: Non-toxic (species level) — safe for pets and humans; sharp spines can puncture skin and cause irritation, so handle with care
- Soil Type: Well-draining cactus mix with coarse sand, pumice, or perlite
- Propagation: Offsets (pups) or seeds; allow offsets to callous before planting in dry soil
- Eventual Height and Spread: 8–12 cm tall; clumps can spread up to 15–20 cm wide over time
- Growth Rate: Slow-growing; gradually forms clusters of snow-white heads
- Pests and Treatment: Susceptible to mealybugs and root rot from overwatering; treat with neem oil and ensure good drainage
- Repotting: Every 2–3 years or when clusters outgrow their pot
- Pruning: Not required; remove dead flowers or damaged offsets as needed
- Air Purification: Minimal; primarily ornamental
- Folklore: Often seen as a symbol of purity and resilience due to its white, snow-like spines and ability to thrive in harsh desert conditions
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