This is my 82 day old, blueberry cookies, auto grown in Ffof soil and feeding Foxfarm nutrients per schedule but modified for autos. It seems all my upper fAn leaves are suffering. My last reading was 6.9 ro 692ppm. Any thoughts on causes. I use 450 watt led at 18 inches above canopy.
I'd wager over fertilization over time - irrelevant now due to the age of plant but autos are super sensitive to ferts.
the last plant that i grew that looked like that was from overfeeding and low ph i had a harvest but the trichomes suffered as a result the whole thing smelled like hay and was harsh to smoke and i know how to dry/cure i ended up making a gallon of canola oil and a few hundred brownies out of it
Excess nutrients can cause the plant to produce more chlorophyll, which can result in a "grassy" or "hay-like" taste. The good thing for you, and all us growers...lessons are learned and we keeping on growing! And the girls get better every grow after that.
No 30% perlite, as FFOF is hot stuff, add more perlite if adding your own nutes or get this good luck
I will break from the pack and say it looks like an advanced potassium deficiency to me. Other folks saying nute burn may be correct. If that has been working its way up from the bottom gradually with leaves turning in to crunchy thin paper, its potassium def. If it happened top to bottom at the same time, could be burn.
Thanks for all the feedback. Yeah looking back I was definitely heavy handed. thought after a couple of grows underneath me I can get a little experimental.ha it did start at the top and worked downward. Is there anything I could or should do at this point. Thanks for your feedback
Potassium deficiencies start at the bottom usually, since it is a mobile nutrient, meaning the plant can move it around fairly easily. When short on potassium, similar to being short on nitrogen, the plant will start pulling potassium out of the lower leaves and pushing it to the newer growth at the top, which it considers much more important. It is possible to see a potassium deficiency start at the top, but rare. That top growth are going to want a LOT more potassium than the bottom growth, so there is a possible scenario where even though the plant is moving what potassium it has to upper growth, it can't do it fast enough to keep up with the higher demand on the top leaves, and boom, top leaves show it first. Have never seen that first hand, but have seen rare pix of it. All that said, its probably more likely that its just straight burn as others have suggested. Just thinking out loud here, I would consider doing a foliar with potassium in it on maybe one or two branches IF the plant were earlier in flower. But at this point, might not want to be spraying, pretty late.
