When Should You Fertilize Orchids? Experts recommend fertilizing Phalaenopsis orchids once every other week or at least once a month only after its blooms have dropped. Fertilize your orchid with a weak solution of a balanced plant fertilizer.

What is the best fertilizer for orchids?

Orchids need to be fed regularly. Growers suggest using a "balanced" fertilizer such as 20-20-20 that includes all "necessary trace elements." Regardless of the fertilizer formulation you choose to use, it should contain little or no urea.

Do indoor orchids need fertilizer?

Like any other plant, orchids need fertilizer to thrive. It's true that they need less than most other plants—and too much fertilizer can quickly burn an orchid's sensitive roots—but there is no doubt that well-fed orchids are healthier, hold their leaves longer, and bear more flowers.