Schlumbergera truncata
Schlumbergera truncata (Thanksgiving Cactus) Care Guide
Featured photoschlumbergera-truncata.jpgSchlumbergera truncata, sold as Thanksgiving Cactus, is an epiphytic cactus native to humid tropical forests, unlike the desert cacti most growers picture when they hear 'cactus'. A Brazilian epiphytic cactus with flat green stem segments edged in pointed projections, blooming in late autumn to early winter with showy zygomorphic flowers in pink, red, white, or orange. The species behind most retail 'Christmas cactus' sold today. Jungle cacti tolerate higher humidity, lower light, and more frequent watering than their desert relatives, which is why they suit indoor cultivation.
Care facts at a glance
- Light
- Bright indirect
- Water
- Water when the top 2 to 3 cm of mix has dried; jungle cacti like more water than desert cacti.
- Humidity
- 50–80 %
- Temperature
- 15–27 °C
- Soil
- Free-draining epiphyte mix of orchid bark, perlite, and a small fraction of peat or coir.
- Origin
- Tropical and subtropical forests of Central and South America (Schlumbergera, Epiphyllum, Rhipsalis), with Rhipsalis baccifera the only cactus native outside the Americas.
- Mature size
- 30 to 100 cm spread depending on species; most are pendulous when grown in hanging pots.
Overview
Schlumbergera truncata is a Cactaceae epiphyte that grows on tree trunks and branches in humid tropical forests. A Brazilian epiphytic cactus with flat green stem segments edged in pointed projections, blooming in late autumn to early winter with showy zygomorphic flowers in pink, red, white, or orange. The species behind most retail 'Christmas cactus' sold today. The flat or cylindrical jointed stems do the work of leaves — true leaves are absent or reduced to scales — and the plants drape rather than grow upright the way desert cacti do.
Care Priorities
- Bright filtered light, never direct midday sun.
- Free-draining epiphytic mix with orchid bark.
- Water more freely than desert cacti, but let the top dry between waterings.
- A cool dry winter rest triggers flowering.
Common Problems
Yellowing or red-flushed segments are usually too much direct sun. Soft mushy stems are overwatering. Flower-bud drop on Schlumbergera is almost always temperature swings during the bud-set period.
Sources & further reading (2)
- encyclopedia — accessed 2026-04-29
- botanical-garden — accessed 2026-04-29
Frequently asked questions
Is this the same as a Christmas cactus?
Most plants sold as 'Christmas cactus' at retail are actually S. truncata or hybrids involving it — the true Christmas cactus is S. buckleyi. S. truncata blooms earlier (late autumn) and has pointed segment edges; S. buckleyi blooms in mid-winter and has rounded segment edges.
How is a jungle cactus different from a desert cactus?
Jungle cacti grow as epiphytes on tree branches in humid tropical forests, so they tolerate lower light, higher humidity, and more frequent watering than desert cacti. Most are pendulous and grown in hanging pots.
Can I propagate from a stem segment?
Yes — break off a healthy two- or three-segment piece, let the cut callus for a few days, and push the cut end into moist epiphytic mix. Roots typically appear within two to three weeks.
