PlantFun
Plant Needs
Sunlight
Bright indirect to partial direct sunlight; tolerates partial shade but avoid prolonged deep shade
Watering
Allow the top 5 cm of soil to dry completely between waterings; avoid standing water to prevent root rot
Temperature
Thrives in 18–28°C; tolerates brief light frosts down to 10°C but avoid prolonged cold below 8°C
Characteristics
- Leaf: Fern-like pinnate fronds up to 1 m long, with glossy dark green, leathery leaflets
- Stem: Subterranean tuberous caudex that stores starch and water
- Inflorescence: Male cones are cylindrical and yellow-brown; female cones are rounded and brown when mature
Care Guide
Watering
Keep soil lightly moist but not waterlogged; reduce frequency during heavy rainfall
Fertilization
Diluted balanced liquid feed once every 2 months. Use a low-nitrogen fertilizer to prevent excessive foliage growth at the expense of caudex development
Eggshell powder topdress：Grind clean, dried eggshells to a fine powder; sprinkle 1 teaspoon per pot every 3 months to boost soil calcium levels; avoid direct contact with plant rootsPruning
- Remove brown, damaged fronds at the base to maintain a tidy appearance
- Trim off mature cones after seed dispersal to redirect energy to foliage and caudex growth
- Avoid cutting healthy fronds unnecessarily, as cycads grow slowly and replace fronds infrequently
Toxicity
Warning: this plant may be toxic.
Pets & Humans
Pets: ASPCA: Toxic; ingestion causes vomiting, diarrhea, lethargy, jaundice, and potential liver failure or seizures
Humans: Contains cycasin toxin; ingestion can cause liver damage, abdominal pain, vomiting, and diarrhea
Garden Uses & Culture
Culture: Symbolizes prehistoric resilience; historically valued for its edible starch after detoxification
Usage: Ornamental garden plant; traditional source of arrowroot starch (processed to remove toxic cycasin)
