Macarthur Palm (Hurricane Palm) care

Light

Macarthur Palm wants the spot a few feet back from a sunny window — bright enough to read a paperback at noon, but the sun never falls directly on the leaves. Naturally an understorey palm; thrives in partial to deep shade and tolerates full sun in humid climates. Indoors, place near a bright window with filtered light. Avoid harsh direct midday sun in dry climates, which can scorch the fronds. A faint hand shadow at midday is the right amount; a sharp dark shadow means it's getting direct sun and probably too much.

Watering

Water macarthur palm every 5–7 days during growing season; reduce in cooler months. The actual day count varies with pot size, light, and season — the finger test (or lifting the pot to feel its weight) is more reliable than a fixed calendar. Empty any drainage saucer afterwards so the pot isn't sitting in water. Prefers consistently moist, well-drained soil. Keep well-watered during summer; avoid allowing the soil to dry out completely. Reduce watering in cooler months but never allow complete drought. Responds well to regular misting in dry indoor conditions.

Soil and pot

Macarthur Palm grows best in fertile, well-drained loam with good organic content. Prefers a sandy or loamy mix rich in organic matter. Good drainage is essential — will not tolerate waterlogging. For container growing, use a quality tropical palm mix or peat-free potting compost amended with perlite for drainage. 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

Macarthur Palm sits happiest at around 60–80% humidity and 10 to 35°C (50 to 95°F). Prefers high humidity characteristic of its rainforest habitat. Indoors, place on a pebble tray with water or group with other plants to raise local humidity. Will tolerate moderate humidity but benefits from regular misting in centrally heated interiors. If you keep the room above 10 to 35°C 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 macarthur palm sparingly. Feed with a balanced slow-release palm fertiliser in spring and again in early summer. Supplement with a liquid palm fertiliser monthly during the growing season. Reduce to no feeding in autumn and winter, particularly for indoor specimens in cool homes. 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 macarthur palm in the Growli community. Each is annotated with the most common cause so you know where to start.

• Cold damage — Severely frost-tender; temperatures below 5°C cause frond browning and temperatures below 0°C are typically fatal. In temperate climates, must be grown indoors or in a heated greenhouse. Bring containerised specimens under cover well before first frost.
• Spider mites indoors — Common in dry, warm interiors. Fine webbing and yellow stippling on fronds are signs of infestation. Increase humidity, mist foliage regularly, and treat with an insecticidal soap or neem oil spray. Inspect new growth regularly.
• Ganoderma butt rot — A serious fungal disease in outdoor tropical plantings caused by Ganoderma zonatum. Produces a distinctive conk (bracket fungus) at the base. There is no cure; infected palms must be removed and destroyed. Avoid wounding the base of the palm.

Propagation

Seed or division of basal suckers. Seeds germinate readily in 3–6 weeks at 28–30°C; soak in warm water for 24–48 hours before sowing to improve germination rates. Basal offsets can be carefully separated from the parent clump with a sharp blade and potted individually into warm, moist compost. 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

Macarthur Palm is pet-safe. Ptychosperma macarthurii is a true palm (Arecaceae) with no reported toxic principles to dogs, cats, or horses. Not individually listed by ASPCA, but Ptychosperma belongs to the same family as ASPCA-confirmed non-toxic palms (Areca, Kentia). No toxic compounds are documented for this genus. 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.

Macarthur Palm deep-dive guides

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

• Macarthur Palm watering schedule
• Macarthur Palm light requirements
• Best soil mix for macarthur palm
• Macarthur Palm fertilizing guide
• When to repot macarthur palm
• How to propagate macarthur palm
• Macarthur Palm growth rate & size
• Macarthur Palm cold hardiness
• Macarthur Palm temperature & humidity
• Is macarthur palm toxic to cats & dogs?
• Is macarthur palm toxic to cats?
• Is macarthur palm toxic to dogs?

Featured in these plant shortlists

Macarthur Palm qualifies for 15 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 low-light houseplants — Houseplants that need no direct sun and cope with a north-facing room or a spot well back from a window.
• 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 pet-safe low-light plants — Non-toxic to cats and dogs AND happy with no direct sun — the two hardest constraints to satisfy at once.
• Best drought-tolerant houseplants — Houseplants that prefer to dry out — forgiving of forgotten watering and ideal for travel or busy weeks.
• Best houseplants for beginners — Forgiving of irregular light and watering — the houseplants least likely to die in a new plant parent’s first season.
• Best humidity-loving houseplants — Houseplants that thrive in a bathroom, kitchen, or by a humidifier — selected by documented humidity preference.
• Best bathroom plants — Humidity-loving houseplants that also cope with lower light — suited to the steamy, often-dim conditions of a typical bathroom.
• Best pet-safe low-maintenance plants — Non-toxic to cats and dogs and forgiving of forgotten watering — the easiest safe choices for a busy pet household.
• Best pet-safe large indoor plants — Big, floor-standing houseplants the ASPCA lists as non-toxic to cats and dogs — a statement plant that is safe around pets.
• Best pet-safe bathroom plants — Non-toxic to cats and dogs and happy in the humid, lower-light conditions of a bathroom — safe greenery for the smallest room.
• Best houseplants for a cool room — Houseplants that tolerate cool conditions down to about 10°C — for an unheated spare room, hallway, porch or a home kept cool.
• Best pet-safe bedroom plants — Non-toxic to cats and dogs and happy in lower light — calming greenery for a bedroom where a pet often sleeps too.
• 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 29 plant shortlists — pet-safe, low-light, drought-tolerant and more

Related guides

Macarthur Palm is also known as Macarthur Palm, MacArthur Palm, and Hurricane Palm.

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