Genus guide
Cereus — 8 species
Part of the Cacti family (Cactaceae)
Cereus is a genus of tall, ribbed columnar cacti native to South America, including the statuesque Peruvian Apple Cactus and Mandacaru. They thrive in full sun — a south-facing window within a foot of the glass is ideal indoors — and follow the classic cactus watering rule: soak thoroughly, then let the soil dry completely before watering again, roughly every two weeks in the growing season. Toxicity varies among species in this genus, so verify the specific species before buying if you have cats or dogs.
All Cereus species we cover
- Column Cactus
- Curiosity Plant
- Mandacaru Cactus
- Monstrose Apple Cactus
- Narrow Rib Cereus
- Peruvian Apple Cactus
- Queen of the Night Cereus
- Spiny Club Cactus
Cereus — frequently asked questions
Are Cereus plants toxic to cats and dogs?
Most Cereus are pet-safe. Of the 8 Cereus species we cover, 5 are non-toxic on the ASPCA list and 3 carry a toxic or mildly-toxic rating. Even so, confirm the individual species before trusting it around pets.
How much light do Cereus plants need?
Most Cereus do best in direct sun. 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 Cereus easy to care for?
Some Cereus suit more experienced growers — several want strong light, sharp drainage or a specific seasonal rhythm. Check the individual species page for the exact regime.
How many Cereus varieties are there?
Growli's care library covers 8 Cereus species and varieties — browse them all above. They share a similar light, water and soil pattern, so once you learn one Cereus, the rest follow closely.
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