I have been reading about the benefits of MSU fertilizer, but note that there is no consistency between growers on the concentration to be used (some use 1/2 tsp per gallon, some use 1 tsp gallon). I intend to use it on my phals (mostly in NZ sphagnum moss, but some in a bark/perlite mixture). I live in the Vancouver BC area (lots of overcast days Oct - April). Any advice would be very much appreciated.

Thanks!