Feed during active growth or flowering. RHS and extension guidance use about every two weeks, then reduce or stop as post-flowering dormant rest begins. This interval is a starting point for flowering indoor cyclamen, not a dormancy rule.
How to fertilize Cyclamen persicum
Feed Cyclamen persicum during active growth or flowering. Use dilute, low-nitrogen liquid fertilizer, then reduce or stop feeding as post-flowering dormancy begins.
Plant coveredCyclamen persicumCyclamen · indoor container
Check for active growth
When to fertilize
Maintain feeding during active winter or spring flowering, taper it as flowering declines, and give no routine feed during the cool, dry dormant rest. The onset and duration are not fixed to one calendar date.
Follow the product label
Fertilizer type and dose
Use a low-nitrogen liquid fertilizer or a houseplant feed intended for flowering plants. No single brand is required, and no guidance here establishes that a high-phosphorus product is superior in every container.
Dilute the fertilizer and follow the product label. No universal household concentration or milliliter amount is established, so do not invent one for a home Cyclamen persicum pot.
Inspect a stressed plant before feeding
When not to fertilize
Too much fertilizer can promote overly lush growth that is more vulnerable to disease. Yellowing during natural dormant decline should not automatically trigger extra feed, because yellow leaves have other possible causes.
Sources
- Royal Horticultural SocietyHow to grow; fertilizer; growth; dormancy
- Iowa State University Extension and OutreachFertilizer; bloom; care after blooming; dormancy
- University of Wisconsin–Madison Division of ExtensionFertilizer; active growth; dormancy; disease risk