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Cactus Moon

Gymnocalycium mihanovichii

houseplant

Moon Cactus, also called Chin Cactus, is a small, globe-shaped cactus with smooth, spineless varieties prized for their unusual appearance and manageable size. This slow-growing species thrives indoors and produces delicate pink, yellow, or white flowers in spring. Many cultivars are grafted onto rootstocks to create the distinctive ball-shaped heads.

Cactus Moon

Common Problems

Select the problem your Cactus Moon is experiencing to get a treatment guide.

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Overwateringchevron_right
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Root Rotchevron_right
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Mushy Stemschevron_right
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Slow Growthchevron_right
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Wiltingchevron_right

Care Guide

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Light
Bright, indirect light; prefers 4–6 hours of bright light daily. Can tolerate partial shade better than many cacti.
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Water
Water moderately during growing season; allow soil surface to dry between waterings. Reduce water significantly in winter.
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Soil
Well-draining cactus or succulent mix; ensure excellent drainage.
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Fertiliser
Apply diluted succulent fertilizer once in spring and once in early summer.
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Temperature
Prefers 50–75°F (10–24°C); tolerates 40–80°F (4–27°C); avoid prolonged exposure to temperatures below 45°F (7°C).
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Humidity
Low humidity preferred; excess moisture increases disease risk.

Toxicity

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Non-toxic; most varieties are spineless or have very small spines, making them safer for households with children and pets.

Common Diseases

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Common Pests

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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.