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Schlumbergera

Common name: Christmas cactus · Thanksgiving cactus · Holiday cactus

Schlumbergera is a small genus of cacti native to the coastal mountains of southeastern Brazil, where it grows as an epiphyte on trees in humid forests. Its flattened, segmented stems arch gracefully and bear vivid, tubular flowers in winter, making it one of the most popular blooming houseplants.

Fun facts

  • Unlike desert cacti, it is a jungle epiphyte that grows on tree branches in Brazil's Atlantic Forest.
  • Blooming is triggered by short days and cool nights in autumn — around 12–14 hours of darkness for several weeks.
  • The genus is named after Frédéric Schlumberger, a 19th-century French cactus collector.
  • Well-cared-for plants can live for decades and are often passed down through families as heirlooms.

Care summary

Sun Bright indirect light
Water Keep lightly moist; let top soil dry slightly
Soil Well-draining, slightly acidic mix with organic matter
Hardiness Zones 10–12
Mature height 30 cm (12 in) tall, trailing wider
Pet safe Non-toxic to cats and dogs

Common problems

    • Keep the plant in one spot
    • Avoid drafts and temperature swings
    • Water evenly while buds develop
    • Let the top inch dry first
    • Use a free-draining epiphyte mix
    • Empty saucers after watering
    • Dab pests with rubbing alcohol
    • Rinse the plant under lukewarm water
    • Repeat treatment every week
    • Give long dark nights in autumn
    • Keep nights cool for six weeks
    • Avoid artificial light after dusk