Fertilize your orchid once per week when you water it. Use the fertilizer at half- strength.
Only fertilize orchids that are actively growing.
Be sure to always measure the amount of fertilizer that you are using. Do not guess as this usually leads to over fertilization.
Water an orchid right before you fertilize it. This prevents the orchid from getting damaged by the fertilizer.
Use fertilizers that are made specifically for orchids.