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Plant care

Christmas cactus (holiday cactus) care

Schlumbergera bridgesii

Also called holiday cactus, Thanksgiving cactus, crab cactus.

RHS H1bUSDA 10-12Pet-safeIndoor 30-60 cm spread

Watering rhythm

7-10days

When the top 2 cm of soil is dry, every 7-10 days

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Light

Bright indirect light (just back from a sunny window)

Soil

Epiphytic cactus or aroid mix

Humidity

50-60%

Temp

15-24°C

Pet safety

Pet-safe

Mature size

30-60 cm spread

Care at a glance

Light

In the wild christmas cactus grows on the bright edge of a forest canopy, not in the canopy and not in the open. Indoors, that translates to within a metre of an unobstructed window, sheer curtain optional. Bright indirect light, with some morning sun. Avoid hot midday sun. The fastest test: a hand held at the leaf casts a soft-edged shadow at noon — sharp shadow means too much sun, no shadow means too little light.

Watering

Aim for when the top 2 cm of soil is dry, every 7-10 days for christmas cactus, but treat that as a starting point rather than a rule. A south-facing summer windowsill will dry the pot twice as fast as a north-facing winter room. Lift the pot; if it feels noticeably lighter than it did wet, water it. Wetter than a desert cactus, drier than a tropical. Keep moisture even when buds are forming to prevent bud drop.

Soil and pot

Christmas cactus grows best in epiphytic cactus or aroid mix. Standard potting compost with orchid bark and perlite. Drainage is essential. A pot with a working drainage hole is non-negotiable for this species — even free-draining mix will turn soggy in a closed planter. If you love the look of a decorative pot without a hole, use it as a cachepot around an inner nursery pot you can lift out to water.

Humidity and temperature

Christmas cactus sits happiest at around 50-60% humidity and 15-24°C (60-75°F). Average to slightly elevated humidity is ideal. If you keep the room above 15 year-round and avoid placing the plant near a cold draught, a hot radiator, or an air-conditioning vent, you have already handled the two biggest indoor stressors.

Fertilising

Feed christmas cactus sparingly. Half-strength balanced feed every 4 weeks during the growing season; switch to a bloom feed in late summer. Skip fertiliser entirely on a stressed, recently-repotted, or actively wilting plant — fertiliser salts make damage worse, not better. Wait for a round of healthy new growth before resuming a feeding rhythm.

Common problems

Below are the issues we see most often on christmas cactus in the Growli community. Where a problem matches one of our diagnostic guides, click through for the full step-by-step recovery plan written for christmas cactus specifically.

  • Bud drop — Sudden change in temperature, light, or moisture — keep conditions stable once buds form.
  • No flowers — Plant did not get long enough nights (14+ hours of darkness) and cool temperatures in autumn.
  • Wrinkled segments — Underwatering; soak thoroughly.
  • Mushy segments — Overwatering or fungal rot; remove affected sections.

Companion plants

Christmas cactus pairs well with Orchid, African violet, and Peace lily. These are species with similar light and water needs, so you can group them in the same room or on the same shelf and water as a batch.

Propagation

Twist off 2-3 connected segments, allow to callus for a day, then root in moist mix in 3-4 weeks. Propagation is the cheapest, most satisfying way to expand a collection — and it doubles as insurance against losing a mature plant to an accident. Take a backup cutting once the parent is established and healthy.

Toxicity to pets

Christmas cactus is pet-safe. ASPCA lists Schlumbergera as non-toxic to cats and dogs. A safe holiday plant for pet households. If you keep cats, dogs, or curious children in the house, weigh placement carefully — a high shelf or a hanging planter is enough for casual safety. For severe ingestion incidents, call your local vet and the ASPCA Animal Poison Control Center (in the US, 888-426-4435).

Pet-safety status is sourced from the ASPCA Toxic and Non-Toxic Plant List, which catalogues the most-asked-about plants for cats, dogs, and horses.

Christmas cactus care — frequently asked questions

What is the common name for Schlumbergera bridgesii?

Schlumbergera bridgesii is most commonly called Christmas cactus, but it is also known as holiday cactus, Thanksgiving cactus, crab cactus. The names refer to the same species, so care instructions for Christmas cactus apply identically to anything sold as holiday cactus.

How much light does christmas cactus need?

Christmas cactus grows best in bright indirect light (just back from a sunny window). Bright indirect light, with some morning sun. Avoid hot midday sun.

How often should I water christmas cactus?

Water christmas cactus when the top 2 cm of soil is dry, every 7-10 days. Wetter than a desert cactus, drier than a tropical. Keep moisture even when buds are forming to prevent bud drop. The finger-test (or lifting the pot to feel its weight) beats a fixed weekly calendar because pot size, light, and season all change how fast the soil dries.

Is christmas cactus toxic to cats and dogs?

Christmas cactus is pet-safe. ASPCA lists Schlumbergera as non-toxic to cats and dogs. A safe holiday plant for pet households.

What USDA hardiness zone does christmas cactus grow in?

Christmas cactus is rated for USDA zone 10-12 (indoor-only in most US homes) and RHS hardiness H1b. Outside that range, grow it as a container plant that overwinters indoors before the first hard frost.

Christmas cactus deep-dive guides

Every aspect of christmas cactus care, each with its own calibrated guide:

Featured in these plant shortlists

Christmas cactus qualifies for 12 curated Growli shortlists — each one filtered objectively from our structured plant-care library, so the selection is consistent and checkable:

  • Best pet-safe houseplants — Houseplants the ASPCA lists as non-toxic to cats and dogs — every one verified against the ASPCA toxic and non-toxic plant list.
  • Best plants for a north-facing window — Houseplants for a north-facing window: bright, even, indirect light and no scorching direct sun. Each pick verified against its documented light needs.
  • Best trailing & climbing houseplants — Vining and trailing houseplants for shelves, hanging pots, and moss poles — selected by growth habit.
  • Best humidity-loving houseplants — Houseplants that thrive in a bathroom, kitchen, or by a humidifier — selected by documented humidity preference.
  • Best flowering houseplants — Indoor plants grown for their blooms — selected from the flowering species in Growli’s plant-care library.
  • Best pet-safe trailing & hanging plants — Trailing and climbing plants the ASPCA lists as non-toxic to cats and dogs — safe for shelves and hanging pots in a pet home.
  • Best pet-safe flowering plants — Flowering houseplants the ASPCA lists as non-toxic to cats and dogs — colour and blooms in a pet home, without the worry.
  • Best pet-safe plants for bright light — Non-toxic to cats and dogs and happy in a bright, sunny spot — safe plants for your best-lit windowsill.
  • Best succulents for beginners — The easiest succulents and cacti to keep alive — selected by documented growth habit, each with the light and watering it actually wants.
  • Best pet-safe succulents — Succulents the ASPCA lists as non-toxic to cats and dogs — low-water greenery that is also safe around a curious pet.
  • Best cat-safe plants — Houseplants the ASPCA lists as non-toxic to cats (and dogs) — safe greenery for a home with a curious cat.
  • Best dog-safe plants — Houseplants the ASPCA lists as non-toxic to dogs (and cats) — safe greenery for a home with a curious dog.
  • Browse all 30 plant shortlists — pet-safe, low-light, drought-tolerant and more

Related guides

Christmas cactus is also known as holiday cactus, Thanksgiving cactus, and crab cactus.