Rick
Well-Known Member
It seems everyone is wondering about MSU's orchid fertilizer, and discussing such things as why 125 ppm, and what about the micronutrients, etc., etc.
Why not go to the source?
https://www.msu.edu/~goddengr/publications/publications.htm
Note "likes clay pots and BASKETS" , Application for non paphs at 125 mg/L N "less for paphs".
I didn't see what the substrate of potting mix is.