In flower, we all cut way back on nitrogen. Looks more like underfertilizing, but it would be best to fill-out the CanCom troubleshooting form before making any drastic changes based on a guess. (the link is in my signature)

I'm curious...who diagnosed it as a nitrogen deficiency?
Rusty Trichome Reviewed by Rusty Trichome on . Possible Nitrogen - Recovery time+amount? I've had what was diagnosed as a nitrogen deficiency in about half of my crop.(4 weeks into flower) I'm 5 days into treating them with a nitrogen based fertilizer as advised and was just wondering what sort of recovery i should be seeing if the diagnosis was correct? and how long i should treat for? The plant that was effected the most seems to be showing no color change in the affected leaves, however new growth seems to be a healthy green. Will the old leaves recover their color or is it Rating: 5