Hey guys, I grow my phals in a grow tent, the temperatures inside usually hit 90F/32.2C in the daytime. Last week I decided to fertilize them for the first time, using the MSU reverse osmosis formula at 130ppm N.
However, the bottom roots of one of my phals have since started turning orange. And most of the ones at the very bottom are dead/growing mold.
Last week, this orchid was perfectly fine and was pushing out new root tips. I'm thinking this might be fertilizer burn but I've never seen roots become orange like this. Any help would be greatly appreciated!
Photos:
Orchid Photos - Album on Imgur
Phal Roots Turning Orange/Dying?
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