Plant library / Succulents & cacti
Column Cactus
Cereus repandus
Toxicity unconfirmed
The plain green column sold as a small cactus — ribbed, a few spines, often several stems in one pot. Full sun and very little water; let the compost dry out completely between drinks, and give almost none from October to March.
Toxicity
Unconfirmed
No pet-poison database gives a verdict for cats or dogs. Treat it as unknown around pets.
Unconfirmed
No pet-poison database gives a verdict for cats or dogs. Treat it as unknown around pets.
Caution
No pet-poison database gives a verdict for cats or dogs. Treat it as unknown around pets.
Pet-safety information is a general guide from the ASPCA's toxic-plant database and covers cats and dogs only. "If eaten" summarises the symptoms ASPCA lists for that plant; how an animal actually reacts depends on how much it ate and on the animal. It isn't exhaustive, isn't veterinary advice, and individual animals vary — never rely on it as the sole basis for a decision about your pet. If you think your pet has eaten a harmful plant, contact a vet immediately.
Care
- WaterEvery 14–28 days
- LightDirect sun
- HumidityLow humidity
- Temperature8–35 °C
The same interval the Sabz app schedules reminders from. In autumn and winter the app stretches it; see houseplants in autumn.
Common problems
- Soft, yellow or brown base — overwatering; the rot starts at the compost line — Overwatering →
- Thin, pale new growth at the tip — too little light, stretching towards the window
- White cottony tufts in the ribs — mealybugs
Similar plants
- Prickly Pear safeOpuntia species
- Pincushion Cactus safeMammillaria fragilis
- Old Man Cactus safeCephalocereus senilis
- Sea Urchin Cactus safeEchinopsis multiplex
In the app
Add a column cactus to Sabz and the watering interval above becomes a reminder, the toxicity verdict sits on the plant's own page, and when a leaf turns, the Check-up reads what you have actually logged to say why.
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