You may apply both organic or inorganic fertilizers on orchid plants. But the most crucial part is that these plants demand fertilizers only in ‘balanced’ amounts. If applied in excess, it may affect the effective growth of plants’ roots and shoots. You may apply fertilizers once in every week. But just spraying the fertilizers in a mild amount would suffice for these plants. If you are looking for organic fertilizers, you may try applying cow dung liquid fertilizer, chickpea fertilizer or liquid fertilizer formulated from coconut water. While using any of these, the fertilizer should be well-diluted with water. The diluted water should be double the amount of the fertilizer used. Organic fertilizers should be used during summer and inorganic fertilizers during the rainy season. More importantly, water the plant before applying any fertilizer. And while applying the fertilizer, apply it on the roots, shoots and leaves, except the flowers.