Growli
Let's go

Plant care

Curly Sentry Palm (Belmore Sentry Palm) care

Howea belmoreana

Also called Curly Sentry Palm, Belmore Sentry Palm, Sentry Palm.

RHS H1bUSDA 10-12Pet-safeIndoor 3–5 m tall indoors over many decades

Watering rhythm

7-10days

Every 7–10 days in summer; every 14–21 days in winter

Jump to schedule→Get smart reminders in the app

Light

Bright indirect light (just back from a sunny window)

Soil

Rich, free-draining loam-based mix

Humidity

40–60%

Temp

12–27°C

Pet safety

Pet-safe

Mature size

3–5 m tall indoors over many decades

Care at a glance

Light

Bright but filtered. Curly Sentry Palm burns within days in unfiltered south-facing summer sun, and stops growing within months in deep shade. Thrives in bright, indirect light; tolerates lower light than most palms but grows noticeably slower. Shield from harsh direct sun, especially through glass, which magnifies heat and scorches leaflets. If you only have a south window, set the plant back 1.5 m or hang a sheer curtain — both knock the intensity down into the right range.

Watering

Watering curly sentry palm: every 7–10 days in summer; every 14–21 days in winter. The number that matters isn't the day of the week — it's how dry the top 2-3 cm of the pot feels. A finger in the soil tells you more than a watering app. After every watering, tip the saucer. Allow the top 3–5 cm of compost to dry between waterings; this palm is prone to Phytophthora root rot if kept wet. Always use tepid water to avoid cold shock to the roots.

Soil and pot

Curly Sentry Palm grows best in rich, free-draining loam-based mix. A loam-based compost (e.g. John Innes No. 3) blended with 20–25% perlite provides the drainage and structural stability this slow-growing palm needs. Avoid peat-heavy mixes that stay wet. 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

Curly Sentry Palm sits happiest at around 40–60% humidity and 12–27°C (54–81°F). Tolerates average indoor humidity better than many palms, but consistent humidity above 40% prevents brown leaflet tips. Group with other plants or use a humidifier in centrally heated rooms in winter. If you keep the room above 12–27°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 curly sentry palm sparingly. Apply a slow-release palm granule fertiliser once in spring and once in early summer; avoid high-nitrogen liquid feeds which promote lush but weak 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 curly sentry palm in the Growli community. Each is annotated with the most common cause so you know where to start.

  • Root rot (Phytophthora) — Overwatering in poorly draining compost is the leading cause of death; fronds yellow from the base upward and the trunk base softens. Remove affected roots, dust with sulphur, repot into fresh dry mix, and reduce watering frequency.
  • Spider mites in dry air — Central heating below 40% humidity invites spider mite colonies on the undersides of leaflets, causing pale, speckled foliage. Regularly wipe fronds and treat with a dilute neem oil spray at 7-day intervals for three applications.

Propagation

Grown almost exclusively from fresh seed; germination is slow, taking 3–6 months at 27°C with consistent bottom heat. Offset division is not possible as this is a single-trunk species. 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

Curly Sentry Palm is pet-safe. Howea belmoreana is not listed as toxic to cats or dogs by the ASPCA. Like related Howea forsteriana (Kentia palm), it is broadly considered non-toxic and safe in homes with pets. 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.

Curly Sentry Palm care — frequently asked questions

What is the common name for Howea belmoreana?

Howea belmoreana is most commonly called Curly Sentry Palm, but it is also known as Curly Sentry Palm, Belmore Sentry Palm, Sentry Palm. The names refer to the same species, so care instructions for Curly Sentry Palm apply identically to anything sold as Belmore Sentry Palm.

How much light does curly sentry palm need?

Curly Sentry Palm grows best in bright indirect light (just back from a sunny window). Thrives in bright, indirect light; tolerates lower light than most palms but grows noticeably slower. Shield from harsh direct sun, especially through glass, which magnifies heat and scorches leaflets.

How often should I water curly sentry palm?

Water curly sentry palm every 7–10 days in summer; every 14–21 days in winter. Allow the top 3–5 cm of compost to dry between waterings; this palm is prone to Phytophthora root rot if kept wet. Always use tepid water to avoid cold shock to the roots. 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 curly sentry palm toxic to cats and dogs?

Curly Sentry Palm is pet-safe. Howea belmoreana is not listed as toxic to cats or dogs by the ASPCA. Like related Howea forsteriana (Kentia palm), it is broadly considered non-toxic and safe in homes with pets.

What USDA hardiness zone does curly sentry palm grow in?

Curly Sentry Palm is rated for USDA zone 10-12 (indoor in most climates) and RHS hardiness H1b. Outside that range, grow it as a container plant that overwinters indoors before the first hard frost.

Curly Sentry Palm deep-dive guides

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

Featured in these plant shortlists

Curly Sentry Palm qualifies for 6 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 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 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 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

Curly Sentry Palm is also known as Curly Sentry Palm, Belmore Sentry Palm, and Sentry Palm.