Fertilizing too much? Too little?

[Luizacft]

What dosage of fertilizer do you provide your orchids during the summer? Would you say that 280ppm of nitrogen is too much or too little for a week?

I'm watering my plants very regularly now. And adjusting fertilizer for Cattleyas, Ascocenda, Rhynchostylis and Tolumnia (which i am watering daily) has been hard.

I also have phals (who doesn't?), coelogyne, oncidiums and cattleya seedlings (several).


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Do. Or do not. There is no try.