My White Widow beauty didn't have a yellow leaf on her a week ago, but now, 7 weeks into flowering, she looks terrible? Possibilities: stress from being moved | fungus gnats | too close to 125w cfl. Is this just normal yellowing from lack of n due to 0-13-0 diet? Or is that black stuff indicative of worse? Thanks for looking. Any advice is appreciated.
i suspect nute deficiency, especially given the 0-13-0 diet and the later stages of flowering. give her some more N and K. have you been supplementing with magnesium and sulfur also? what about micronutrients? some yellowing at the later stages of flowering are expected, but not that much. i think she just wants some more food.
Thanks. I'm just glad to hear that it's nothing worse. I've also been using a dab of Super Thrive and 50%-strength Earth Juice Bloom, but nothing with micronutrients so maybe that's it.