Moon Cactus

Gymnocalycium mihanovichii

Family: Cactaceae Origin: South America Cactus

Snap a photo — AI Planter identifies it instantly, on your device.

Care requirements

Watering	every 3-4 weeks — Let soil dry completely between waterings
Light	Bright, indirect
Humidity	20%–40% (ideal 30%)
Temperature	10–32°C (ideal 21°C)
Fertilizer	Every 2-3 months in spring/summer — Low-nitrogen cactus fertilizer
Soil	Very well-draining cactus/succulent mix (pH 5.5–7.0)

How often should I water Moon Cactus?

Water Moon Cactus every 3-4 weeks. Let soil dry completely between waterings.

How much light does Moon Cactus need?

Moon Cactus grows best in bright, indirect light. Protect it from harsh direct sun, which can scorch the leaves.

What is the most common problem with Moon Cactus?

Etiolation is the most common problem. Likely causes: insufficient light. What to do: move to a brighter spot; gradually increase sun exposure.

Causes: Insufficient light

Fix: Move to a brighter spot; Gradually increase sun exposure

Causes: Overwatering, Poor drainage, Cold drafts

Fix: Reduce watering; Check drainage holes; Move to a warmer spot

Causes: Low humidity, Fluoride in tap water, Underwatering

Fix: Increase humidity; Use filtered water; Water more consistently

Causes: Overwatering, Heavy soil, No drainage holes

Fix: Repot in well-draining soil; Allow soil to dry; Trim mushy roots

Causes: Mealybugs, Spider mites, Scale

Fix: Wipe with insecticidal soap; Isolate the plant; Check new plants before bringing home