Genus guide
Gymnocalycium — 22 species
Part of the Cacti family (Cactaceae)
Gymnocalycium, commonly called Chin Cacti, is a genus of small, ribbed South American cacti that stand out for their ability to thrive in lower light than most cacti — bright indirect light suits them well, with some direct morning sun appreciated. Water deeply but infrequently, letting the soil dry completely between waterings, as they are highly susceptible to rot in wet conditions. The well-known Moon Cactus is a grafted Gymnocalycium. According to the ASPCA, Gymnocalycium cacti are non-toxic to cats and dogs, though their spines pose a physical hazard.
All Gymnocalycium species we cover
- Bruch's Chin Cactus
- Chin Cactus
- Chin Cactus
- Dwarf Chin Cactus
- Giant Chin Cactus
- Gymnocalycium andreae
- Gymnocalycium denudatum
- Horst's Gymnocalycium
- Hunchback Gymnocalycium
- Marson's Gymnocalycium
- Moon Cactus
- Moon Cactus
- Moser's Gymnocalycium
- Pflanz's Chin Cactus
- Pflanz's Chin Cactus
- Plaid Cactus
- Quehl's Chin Cactus
- Quehlianum Chin Cactus
- Spegazzini's Gymnocalycium
- Spider Cactus
- Thorny Chin Cactus
- Variegated Moon Cactus
Gymnocalycium — frequently asked questions
Are Gymnocalycium plants toxic to cats and dogs?
Most Gymnocalycium are pet-safe. Of the 22 Gymnocalycium species we cover, 22 are non-toxic on the ASPCA list and 0 carry a toxic or mildly-toxic rating. Even so, confirm the individual species before trusting it around pets.
How much light do Gymnocalycium plants need?
Most Gymnocalycium do best in bright indirect light. If yours stretches toward the window or loses its variegation it wants more light; scorched or bleached leaves mean it is getting too much direct sun.
Are Gymnocalycium easy to care for?
Gymnocalycium are moderate to grow: the main requirement is a genuinely bright spot out of harsh midday sun. Get the light right and the rest of their care follows.
How many Gymnocalycium varieties are there?
Growli's care library covers 22 Gymnocalycium species and varieties — browse them all above. They share a similar light, water and soil pattern, so once you learn one Gymnocalycium, the rest follow closely.
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