I like MSU, but any fert will work as long as you don't use such high concentrations as to "burn" the roots of your orchids, and as long as it has all the micro nutrients along with the macro. But, there are a lot of opinions on fertilizers, so brace yourself lol
Question on Miracle gro for orchids and Miracle gro for acid loving plants when its all the same and we pay more for the word Orchid or am I missing some thing? the Guaranteed analysis is the same on both its even the same on Jacks Classic orchid food all are 30 10 10.
I have used miracle gro on my orchids but it didn't seem to be any better than jacks classic orchid food