Growli

Plant care

Fishtail palm care

Caryota mitis

Also called clustering fishtail palm, Burmese fishtail palm.

RHS H1bUSDA 10-11Mildly toxic to petsIndoor 2-3 m indoors

Watering rhythm

5-7days

When the top 2-3 cm of soil is dry, every 5-7 days

Light

Bright indirect light (just back from a sunny window)

Soil

Rich free-draining mix

Humidity

60-70%

Temp

20-29°C

Pet safety

Mildly toxic to pets

Mature size

2-3 m indoors

Care at a glance

Light

In the wild fishtail palm 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 direct 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 2-3 cm of soil is dry, every 5-7 days for fishtail palm, 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. Keep soil consistently moist in growing season; reduce in winter.

Soil and pot

Fishtail palm grows best in rich free-draining mix. Compost with 20% perlite and orchid bark for aeration. 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

Fishtail palm sits happiest at around 60-70% humidity and 20-29°C (68-85°F). Needs high humidity; struggles in dry rooms. If you keep the room above 20 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 fishtail palm sparingly. Palm-specific fertiliser monthly during growth. 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 fishtail palm in the Growli community. Each is annotated with the most common cause so you know where to start.

  • Brown leaf tipsLow humidity or tap-water minerals.
  • Spider mitesCommon in dry rooms; rinse fronds and treat with horticultural soap.
  • YellowingOften magnesium deficiency; feed with palm fertiliser.
  • Single stem dyingNormal — each stem flowers once then dies, but the clump persists.

Propagation

Divide established clumps or sow fresh seed. 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

Fishtail palm is mildly toxic to pets. Caryota mitis fruit and sap contain oxalic acid crystals that cause skin and mucous-membrane irritation in pets and people. Wear gloves when pruning. 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.

Fishtail palm care — frequently asked questions

What is Fishtail palm?

Fishtail palm (Caryota mitis) is a houseplant with a clumping feather palm with multiple stems growth habit, reaching 2-3 m indoors at maturity. Fishtail palm is a clumping tropical palm with bipinnate leaves that resemble ragged fish tails. Striking but demanding: it wants bright light, high humidity, and consistent watering.

How much light does fishtail palm need?

Fishtail palm grows best in bright indirect light (just back from a sunny window). Bright indirect light with some morning direct sun.

How often should I water fishtail palm?

Water fishtail palm when the top 2-3 cm of soil is dry, every 5-7 days. Keep soil consistently moist in growing season; reduce in winter. 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 fishtail palm toxic to cats and dogs?

Fishtail palm is mildly toxic to pets. Caryota mitis fruit and sap contain oxalic acid crystals that cause skin and mucous-membrane irritation in pets and people. Wear gloves when pruning.

What USDA hardiness zone does fishtail palm grow in?

Fishtail palm is rated for USDA zone 10-11 (indoor 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.

Fishtail palm deep-dive guides

Every aspect of fishtail palm care, each with its own calibrated guide:

Featured in these plant shortlists

Fishtail palm qualifies for 2 curated Growli shortlists — each one filtered objectively from our structured plant-care library, so the selection is consistent and checkable:

Related guides

Fishtail palm is also commonly called clustering fishtail palm or Burmese fishtail palm.