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Plant care

Tete Cycad (Winged-cone Cycad) care

Encephalartos pterogonus

Also called Tete Cycad, Winged-cone Cycad.

RHS H1bUSDA 10–12Toxic to petsIndoor 2–4 m tall (6–13 ft)

Watering rhythm

2-4weeks

Every 2–4 weeks in the growing season; once a month or less in winter

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Light

Direct sun (at least 4-6 hours)

Soil

Coarse, sharply drained rocky mix

Humidity

30–55%

Temp

12–40°C

Pet safety

Toxic to pets

Mature size

2–4 m tall (6–13 ft)

Care at a glance

Light

Most houseplants will scorch where tete cycad thrives. Give it the windowsill you'd otherwise leave empty because everything else burned there. Native to hot, semi-arid lowveld and rocky escarpments at low elevation. Demands full sun and high light intensity. At least 6–8 hours of direct sunlight daily. In cooler climates, grow in a heated greenhouse or conservatory in the sunniest position. Insufficient light results in etiolated, weak new growth. A plant moved abruptly from low light to direct sun bleaches in 48 hours — always acclimatise over a week.

Watering

Aim for every 2–4 weeks in the growing season; once a month or less in winter for tete 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. Adapted to seasonal drought. Water deeply but infrequently, allowing the substrate to dry completely before the next irrigation. During the cool, dry dormancy period (winter), withhold water almost entirely. Plants in the ground in subtropical climates are largely self-sufficient from seasonal rainfall.

Soil and pot

Tete Cycad grows best in coarse, sharply drained rocky mix. Mimic its natural rocky lowveld habitat: 50–60% coarse grit, gravel, or decomposed granite, with 30–40% loam and minimal organic matter. pH 6.0–7.0. The mix must drain instantly — water should flow through within seconds of pouring. Avoid any peat or moisture-retentive components. 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

Tete Cycad sits happiest at around 30–55% humidity and 12–40°C (54–104°F). Naturally adapted to the dry, hot lowveld; tolerates low to moderate ambient humidity without issue. Does not benefit from misting. Ensure good ventilation around the crown, especially in humid indoor environments. If you keep the room above 12–40°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 tete cycad sparingly. Single application of slow-release granular fertiliser (balanced NPK) at the start of the warm growing season. A half-strength liquid feed mid-season can stimulate cone and frond development. Do not fertilise during cool or dry dormancy periods. 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 tete cycad in the Growli community. Each is annotated with the most common cause so you know where to start.

  • Cold damage and frost — Being a hot lowveld species, Encephalartos pterogonus is particularly sensitive to cold. Temperatures below 12°C cause leaf discolouration and stunted new growth; frost kills foliage and can rot the crown. In temperate climates, must be overwintered frost-free and kept very dry.
  • Root rot from winter moisture — During its natural dry-season dormancy, this species should receive minimal water. Continued watering in cool, low-light conditions leads to root and crown rot. Reduce watering to near-zero in winter; resume only when temperatures rise above 18°C and active growth resumes.
  • Scale insects — Cycad scale species and mealybugs infest fronds and the trunk. Treat promptly with horticultural oil or a systemic insecticide. Inspect the crown and trunk regularly, especially on new growth flushes. Heavily infested fronds should be removed and destroyed.

Propagation

Propagate from fresh seed only — sarcotesta removed, sown in moist sand at 30–32°C; germination takes 3–8 months. Higher germination temperatures reflect this species' hot lowveld origins. Offsets are rarely produced. CITES Appendix I protection requires all plants and seed to be from permitted cultivated sources. 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

Tete Cycad is toxic to pets. All Encephalartos species are severely toxic to dogs, cats, horses, and humans. Cycasin and related compounds in all plant parts cause acute hepatotoxicity (liver failure), gastrointestinal haemorrhage, neurological effects, and death. ASPCA classifies cycads as severely toxic. Any suspected ingestion by pets requires immediate emergency veterinary care. 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.

Tete Cycad care — frequently asked questions

What is the common name for Encephalartos pterogonus?

Encephalartos pterogonus is most commonly called Tete Cycad, but it is also known as Tete Cycad, Winged-cone Cycad. The names refer to the same species, so care instructions for Tete Cycad apply identically to anything sold as Winged-cone Cycad.

How much light does tete cycad need?

Tete Cycad grows best in direct sun (at least 4-6 hours). Native to hot, semi-arid lowveld and rocky escarpments at low elevation. Demands full sun and high light intensity. At least 6–8 hours of direct sunlight daily. In cooler climates, grow in a heated greenhouse or conservatory in the sunniest position. Insufficient light results in etiolated, weak new growth.

How often should I water tete cycad?

Water tete cycad every 2–4 weeks in the growing season; once a month or less in winter. Adapted to seasonal drought. Water deeply but infrequently, allowing the substrate to dry completely before the next irrigation. During the cool, dry dormancy period (winter), withhold water almost entirely. Plants in the ground in subtropical climates are largely self-sufficient from seasonal rainfall. 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 tete cycad toxic to cats and dogs?

Tete Cycad is toxic to pets. All Encephalartos species are severely toxic to dogs, cats, horses, and humans. Cycasin and related compounds in all plant parts cause acute hepatotoxicity (liver failure), gastrointestinal haemorrhage, neurological effects, and death. ASPCA classifies cycads as severely toxic. Any suspected ingestion by pets requires immediate emergency veterinary care.

What USDA hardiness zone does tete cycad grow in?

Tete Cycad is rated for USDA zone 10–12 and RHS hardiness H1b. Outside that range, grow it as a container plant that overwinters indoors before the first hard frost.

Tete Cycad deep-dive guides

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

Featured in these plant shortlists

Tete Cycad qualifies for 3 curated Growli shortlists — each one filtered objectively from our structured plant-care library, so the selection is consistent and checkable:

Related guides

Tete Cycad is also commonly called Tete Cycad or Winged-cone Cycad.