How to fertilize orchids
There's an old saying regarding watering Orchids: Water weekly, weakly. And almost the same goes when it comes to fertilizing them: they need fertilizer but don't fertilize them too much and not too often. They will handle too little fertilizer way better than too much. A minimum is to fertilize them once every month, but we would suggest fertilizing them according to Plantas schedule.
If the soil is wet - snooze this action, we will remind you again in 2 days.

Choose the best fertilizer
You can use any fertilizer suited for Orchids or any balanced fertilizer
S ome examples when it comes to NPK*: 30-10-10, 15-5-5 or 20-20-20).
For boosting blooms next year, select a fertilizer with higher Phosphorus (NPK 10-30-20) and fertilize your orchid with it during the fall.
* NPK: Nitrogen (N), Phosphorus (P) and Potassium (K)
Recommended fertilizers

This is how to fertilize your orchid
Select your balanced fertilizer that's suited for Orchids. Mix the fertilizer in water according to the instructions. Can't find any instructions for Orchids? Mix it at half-strength.
Slowly pour the fertilizer into the pot until it runs out from the holes in the bottom / dip the pot into the water with fertilizer and let it soak for approx. 5-10 minutes. Just make sure to protect the leaves from the water / fertilizer mix.
Drain any excess solution after 20-30 minutes.