Feed during active growth or a new leaf flush. No household calendar interval for a potted Cycas revoluta is established. Slow, episodic growth makes a calendar alone unreliable.
How to fertilize Cycas revoluta
Feed Cycas revoluta when a new leaf flush is active. UF/IFAS supports a palm fertilizer containing manganese, not a guessed high-nitrogen dose.
Check for active growth
When to fertilize
Follow active growth rather than a calendar. Use outdoor spring, summer, and fall schedules only for outdoor plants. Indoor winter conditions differ, and no exact indoor stop or restart date is supported.
Follow the product label
Fertilizer type and dose
UF/IFAS states that palm fertilizer containing manganese is a suitable nutrition route for sago palms. Wisconsin discusses high-nitrogen fertilizer in cycad growth context, not as a dose instruction.
Inspect a stressed plant before feeding
When not to fertilize
Manganese deficiency can be associated with yellow or spotted new growth, while too much fertilizer can injure cycads. Inspect the newest flush and root-zone history before changing feed.
Sources
- University of Florida IFAS ExtensionNutrient deficiency; manganese; fertilizer requirements
- University of Wisconsin–Madison Division of ExtensionContainer-grown sago palm; fertilization; high nitrogen warning; repotting
- Royal Horticultural SocietyCultivation; growing conditions; under glass