Plant care
Wood's Cycad (Wood's Encephalartos) care
Encephalartos woodii
Also called Wood's Encephalartos.
Watering rhythm
10-14days
When the top 5 cm of mix is dry, roughly every 10-14 days in growth
Light
Bright indirect light (just back from a sunny window)
Soil
Gritty, free-draining cactus or palm mix
Humidity
40-60%
Temp
18-30°C
Pet safety
Toxic to pets
Mature size
Up to 6 m over many decades in habitat
Care at a glance
Light
In the wild wood's cycad 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. Give it the brightest spot you have, ideally a few hours of direct sun through a south or west window. In low light, fronds stretch and weaken and new flushes stall. 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 5 cm of mix is dry, roughly every 10-14 days in growth for wood's cycad, 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. Water deeply, then let the mix dry well before the next drink. The swollen caudex stores water, so it tolerates drought far better than sogginess. Cut back sharply in winter.
Soil and pot
Wood's Cycad grows best in gritty, free-draining cactus or palm mix. Use a coarse blend of cactus compost cut with pumice, perlite or grit. The roots rot fast in dense, water-holding soil, so prioritise drainage over richness. 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
Wood's Cycad sits happiest at around 40-60% humidity and 18-30°C (64-86°F). Tolerates average household humidity well. It is far more sensitive to wet roots and cold than to dry air, so no misting is needed. If you keep the room above 18 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 wood's cycad sparingly. Feed monthly through spring and summer with a balanced liquid feed at half strength, or use a slow-release palm/cycad fertiliser once in spring. Cycads benefit from supplemental magnesium; do not feed in winter. 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 wood's cycad in the Growli community. Each is annotated with the most common cause so you know where to start.
- Root and caudex rot — The single most common killer. Caused by dense soil or overwatering; the trunk softens and browns. Use gritty mix and let it dry between waterings.
- Stalled growth — Cycads naturally produce only one frond flush per year. A specimen that never flushes is usually too dark, too cold or pot-bound.
- Scale insects — Cycad scale and soft scale cling to frond undersides and crowns. Wipe off and treat with horticultural oil; inspect new fronds regularly.
- Yellowing fronds — Older fronds yellow naturally with age, but widespread chlorosis signals magnesium or manganese deficiency or waterlogged roots.
Propagation
Propagated commercially from offset 'pups' at the base of the trunk, as the species is functionally extinct with no known females and cannot set seed. Detach rooted offsets and pot in gritty mix; expect very slow establishment. 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
Wood's Cycad is toxic to pets. Toxic to cats and dogs. All cycads (order Cycadales, including Encephalartos) contain cycasin, mirroring the ASPCA's classification of the sago palm (Cycas) as toxic. Ingestion causes vomiting, diarrhoea, severe liver failure and neurological signs; seeds are the most poisonous part. Treat any ingestion as a veterinary emergency. 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.
Wood's Cycad care — frequently asked questions
What is the common name for Encephalartos woodii?
Encephalartos woodii is most commonly called Wood's Cycad, but it is also known as Wood's Encephalartos. The names refer to the same species, so care instructions for Wood's Cycad apply identically to anything sold as Wood's Encephalartos.
How much light does wood's cycad need?
Wood's Cycad grows best in bright indirect light (just back from a sunny window). Give it the brightest spot you have, ideally a few hours of direct sun through a south or west window. In low light, fronds stretch and weaken and new flushes stall.
How often should I water wood's cycad?
Water wood's cycad when the top 5 cm of mix is dry, roughly every 10-14 days in growth. Water deeply, then let the mix dry well before the next drink. The swollen caudex stores water, so it tolerates drought far better than sogginess. Cut back sharply 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 wood's cycad toxic to cats and dogs?
Wood's Cycad is toxic to pets. Toxic to cats and dogs. All cycads (order Cycadales, including Encephalartos) contain cycasin, mirroring the ASPCA's classification of the sago palm (Cycas) as toxic. Ingestion causes vomiting, diarrhoea, severe liver failure and neurological signs; seeds are the most poisonous part. Treat any ingestion as a veterinary emergency.
What USDA hardiness zone does wood's cycad grow in?
Wood's Cycad is rated for USDA zone 9-11 (indoor or conservatory in most US homes) and RHS hardiness H2. Outside that range, grow it as a container plant that overwinters indoors before the first hard frost.
Wood's Cycad deep-dive guides
Every aspect of wood's cycad care, each with its own calibrated guide:
- Wood's Cycad watering schedule
- Wood's Cycad light requirements
- Best soil mix for wood's cycad
- Wood's Cycad fertilizing guide
- When to repot wood's cycad
- How to propagate wood's cycad
- Wood's Cycad growth rate & size
- Wood's Cycad cold hardiness
- Wood's Cycad temperature & humidity
- Is wood's cycad toxic to cats & dogs?
- Is wood's cycad toxic to cats?
- Is wood's cycad toxic to dogs?
Featured in these plant shortlists
Wood's Cycad qualifies for 3 curated Growli shortlists — each one filtered objectively from our structured plant-care library, so the selection is consistent and checkable:
- 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 drought-tolerant houseplants — Houseplants that prefer to dry out — forgiving of forgotten watering and ideal for travel or busy weeks.
- Houseplants toxic to cats & dogs — The common houseplants the ASPCA lists as toxic to cats and dogs — the ones to keep out of reach, each with its symptoms and a safe alternative.
- Browse all 29 plant shortlists — pet-safe, low-light, drought-tolerant and more
Related guides
Wood's Cycad is also commonly called Wood's Encephalartos.