Bishop's Cap Cactus
Astrophytum myriostigma
succulentA distinctive spineless or nearly spineless cactus with a geometric star-shaped body and white spots (scutellae) that give it a striking appearance. Produces pale yellow flowers with red centers in summer. A slow-growing Mexican native that makes an excellent focal specimen for collectors.
Common Problems
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Care Guide
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Light
Bright light; prefers partial shade in very hot climates; requires at least 3–4 hours of direct sun
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Water
Water sparingly during growing season; minimize water in winter; allow soil to dry completely between waterings
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Soil
Extremely well-draining cactus mix with added coarse sand, perlite, or gravel; prioritize drainage
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Fertiliser
Minimal fertilizer needed; apply diluted cactus formula once or twice in spring only
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Temperature
Prefers 60–75°F (15–24°C); tolerates down to 35°F (2°C); benefits from cool winter rest
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Humidity
Very low; maintain dry, arid conditions; high humidity promotes rot and fungal issues
Toxicity
check_circleSafe for Catscheck_circleSafe for Dogscheck_circleSafe for Children
Non-toxic; minimal hazard due to lack of significant spines
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.