I used to use Dynagro 10-5-5, and switched a few months ago to the MSU formula (First Ray's liquid formula), which is way lower in phosphorus. There is no question that I am seeing fewer problems with root rot, and generally better growth...with no reduction in flowering. In fact I was astounded to see a 3.5" wide phal seedling spiking....total surprise as I thought it was way too young, and besides I have lousy luck with phals...Take care, Eric Muehlbauer in heavily rainy Queens NY...Paphs bellatulum, bellatulum album, and villosum , Phrag warczwicianum (a different spelling each time I try..) in bud...........
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