Feeding Cyclamen Plants
Generally, a complete houseplant fertilizer for cyclamens is recommended, like a 10-10-10 or 20-20-20. Fertilize every three to four weeks. Cyclamen plants with yellowing leaves may benefit from a complete houseplant fertilizer with added iron. To promote and prolong blooms, feed cyclamen plants with a fertilizer high in phosphorus, like 4-20-4, at the beginning of winter just as blooms start to develop. Cyclamen plants like slightly acidic soil and can benefit from an acid fertilizer once a year. Too much fertilizer can cause lush foliage but not many blooms.
When to Fertilize a Cyclamen Plant
Cyclamen plants bloom in winter and then generally go dormant around April. During this bloom period is when cyclamen fertilizing needs are the greatest. In fall, or early winter, fertilize with a low nitrogen fertilizer every other week until blooms appear. Once blooming, it is only necessary to feed cyclamen plants every three to four weeks with a well-balanced houseplant fertilizer. In April, when the plant starts to go dormant, stop fertilizing cyclamen.
