Quote:
Originally Posted by Pokey49
the directions on the bag says 1 tsp per gallon, but I have been doing 1 tsp/2 gallons......still to much??? I use it on my pahps, cyms and phals too.
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Most orchids never routinely see more than about 25 ppm total dissolved solids (TDS). A 20-13-14 fertilizers provides 264 ppm N per teaspoon per gallon (487 ppm of N, P, & K - and that does not include any of the minor and trace elements in the formula).
I feed at every watering, so use about 30 ppm N. if I fed weekly or less often, I'd go with 100 ppm N.