How to care for Thanksgiving Cactus
Schlumbergera truncata · Cactaceae
The earlier-blooming sibling of the Christmas cactus, told apart by the pointed, claw-like teeth on its stem segments — most 'Christmas cacti' in stores are actually this species. A Brazilian epiphyte, it flowers in a huge color range from white to salmon to magenta in late autumn. Care is identical to its holiday relatives: gentle light and even moisture. Water roughly every 7 days while it's growing (about every 18 in winter), give it bright, indirect light, kept above 50°F (10°C) — average room humidity suits it.
Care at a glance
Keep it lightly, evenly moist while growing and flowering, watering when the surface few centimeters dry.
Bright indirect light year-round, with only mild morning sun; it summers happily outdoors in full shade.
Monthly half-strength balanced feed from spring through summer; stop by early autumn for bud set.
Mistakes that kill this plant
- Desert-cactus drought treatment shriveling an epiphyte.
- Constantly saturated soil, especially in a cool room.
- Warm rooms and lit evenings all autumn, which simply cancel flowering (and long neglect then kills the weakened plant).
Seasonal tips
- Cool autumn nights around 10-15 C plus long darkness trigger a reliable bloom about six weeks after the nights turn cool in autumn.
- Hold the plant's position steady from bud set through flowering.
- Prune by twisting off segments in late spring to thicken the plant.
Is it safe for pets?
We couldn’t place Thanksgiving Cactus on a toxic or a non-toxic list, so its toxicity is unconfirmed — which is not the same as safe.
Full pet-safety details for cats & dogsCare for your Thanksgiving Cactus on autopilot
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Toxicity here is informational, not a safety guarantee. Those are our own records, compiled by following the ASPCA's published toxic and non-toxic plant lists and Pet Poison Helpline's plant poison list rather than copied from them — confirm anything that matters against those lists or with your vet. If your pet ingested this plant, contact your vet or the ASPCA Animal Poison Control Center at (888) 426-4435.