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Plant care

Australian Cycad (Zamia Palm) care

Cycas media

Also called Australian Cycad, Zamia Palm, Burrawang Palm.

RHS H2USDA 9-12Toxic to petsIndoor 2–7 m tall (6–23 ft)

Watering rhythm

14-21days

Every 14–21 days in summer; very sparingly in winter

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Light

Bright indirect light (just back from a sunny window)

Soil

Sandy, gritty, free-draining mix

Humidity

40–70%

Temp

5–40°C

Pet safety

Toxic to pets

Mature size

2–7 m tall (6–23 ft)

Care at a glance

Light

Bright but filtered. Australian Cycad burns within days in unfiltered south-facing summer sun, and stops growing within months in deep shade. Thrives in full sun to partial shade. Young plants prefer filtered light or morning sun with afternoon shade; mature specimens tolerate open full sun. Avoid dense shade, which causes stretching and poor frond development. 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 australian cycad: every 14–21 days in summer; very sparingly 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. Extremely drought tolerant once established, with a tuberous trunk that stores water. Water deeply but infrequently, allowing the soil to dry completely between waterings. Overwatering is the primary cause of death in container cultivation.

Soil and pot

Australian Cycad grows best in sandy, gritty, free-draining mix. Requires excellent drainage above all. Use a mix of coarse sand (50%), perlite (20%), and loam or pumice (30%). pH 6.0–7.5. Never plant in clay or poorly drained soils. 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

Australian Cycad sits happiest at around 40–70% humidity and 5–40°C (41–104°F). Tolerates a wide range of humidity levels in its native range from dry tropics to moist subtropical forest margins. Not sensitive to low humidity once established outdoors. If you keep the room above 5–40°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 australian cycad sparingly. Feed sparingly once in spring with a slow-release balanced fertiliser. Cycads are not heavy feeders; excessive nitrogen produces lush but structurally soft new growth. A light top-dress of compost in spring is often sufficient. 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 australian cycad in the Growli community. Each is annotated with the most common cause so you know where to start.

  • Scale insects (cycad scale / Aulacaspis yasumatsui) — Cycad Aulacaspis scale causes white encrustation on fronds, petioles, and roots leading to frond yellowing and plant death if untreated; treat with multiple applications of horticultural oil and systemic insecticides.
  • Root and crown rot — Caused by Phytophthora or Pythium in waterlogged soil; affected plants decline rapidly with yellowing fronds and a soft, discoloured crown — there is no cure once advanced, prevention through sharp drainage is essential.
  • Manganese deficiency — New fronds emerge with interveinal chlorosis and may be stunted or distorted — common in alkaline substrates; apply chelated manganese and adjust soil pH downward slightly.

Propagation

Seed or offshoots (pups). Fresh seeds germinate in 3–12 months at 27–30°C (80–86°F) in moist sand. Basal offsets (pups) can be removed when 20–30 cm tall, allowed to callous for several days, then potted into dry, gritty mix. 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

Australian Cycad is toxic to pets. SEVERELY TOXIC to dogs, cats, and humans. All parts of Cycas media — seeds, leaves, trunk, and roots — contain cycasin and other neurotoxic glycosides. Ingestion causes vomiting, liver failure, neurological signs, and can be fatal. Cycas genus is listed on the ASPCA toxic plant database as causing liver failure. Seek emergency veterinary care immediately if ingestion is suspected. 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.

Australian Cycad care — frequently asked questions

What is the common name for Cycas media?

Cycas media is most commonly called Australian Cycad, but it is also known as Australian Cycad, Zamia Palm, Burrawang Palm. The names refer to the same species, so care instructions for Australian Cycad apply identically to anything sold as Zamia Palm.

How much light does australian cycad need?

Australian Cycad grows best in bright indirect light (just back from a sunny window). Thrives in full sun to partial shade. Young plants prefer filtered light or morning sun with afternoon shade; mature specimens tolerate open full sun. Avoid dense shade, which causes stretching and poor frond development.

How often should I water australian cycad?

Water australian cycad every 14–21 days in summer; very sparingly in winter. Extremely drought tolerant once established, with a tuberous trunk that stores water. Water deeply but infrequently, allowing the soil to dry completely between waterings. Overwatering is the primary cause of death in container cultivation. 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 australian cycad toxic to cats and dogs?

Australian Cycad is toxic to pets. SEVERELY TOXIC to dogs, cats, and humans. All parts of Cycas media — seeds, leaves, trunk, and roots — contain cycasin and other neurotoxic glycosides. Ingestion causes vomiting, liver failure, neurological signs, and can be fatal. Cycas genus is listed on the ASPCA toxic plant database as causing liver failure. Seek emergency veterinary care immediately if ingestion is suspected.

What USDA hardiness zone does australian cycad grow in?

Australian Cycad is rated for USDA zone 9-12 and RHS hardiness H2. Outside that range, grow it as a container plant that overwinters indoors before the first hard frost.

Australian Cycad deep-dive guides

Every aspect of australian cycad care, each with its own calibrated guide:

Featured in these plant shortlists

Australian Cycad qualifies for 4 curated Growli shortlists — each one filtered objectively from our structured plant-care library, so the selection is consistent and checkable:

Related guides

Australian Cycad is also known as Australian Cycad, Zamia Palm, and Burrawang Palm.