Horacio.....you will simply have to get resigned to slower growth on your parvi's and brachy's. They range from moderately slow (micranthum, armeniacum, niveum) to very slow (emersonii). Don't be afraid to fertilize, but don't go overboard either....I use MSU fertilizer (forget the exact ratio's, but high N, low P and K, no urea, lots of trace minerals) with a little bit of pro-tekt (to raise the pH a tiny bit) regularly during the growing season, usually once/week (1/2 tsp/gal, roughly 75-100 ppm N). No fertilizer and less water for the parvi's between Nov and feb, a little fertilizer for niveum. Of all the plants you mention, niveum is probably fastest growing and certainly easiest to bloom....maybe not the hardiest though...Take care, Eric Muehlbauer in Queens NY....paphs Flamingo Gold, Berenice, and Maelstrom in bud.....Cyp pubescens and Bifrenaria "harrisonia?" in bloom........
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