Hi all. I use MSU granular fertilizer for my orchids. I don't keep it in the fridge because when I did last year, it became very lumpy. This time I had purchased those little silicon packets, and put 2 of them in the jar, and I've kept this jar on a shelf under where I grow my phals. Over the past few weeks, I've noticed the color changing from the brighter pink tone, to a dull peach. Then this morning I noticed that it looks almost like it's molding! I am at a loss as to what to do. Should I use more than 2 packets in the jar? Or go back to refrigeration? And, is it ok to continue to use this if it's turning color? Here in Vermont it's been rainy more than usual, and the humidity levels in my house hangs in the 70% range. Any ideas?
How to keep granular MSU from mold?
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