I have plants in different stages of flowering. Some early, some mid flower, and some late flower. I am growing under leds.in soil and using the same nutes(FloraNova Bloom 4-8-7) for all flowering plants when watering. I always test water ph (6.5 – 7.0.) However, I don't have a PH meter to test the soil. The leaves on the late flowering plants are turning brown in places and are turning downward. They are somewhat brittle as well. The plant in the photo is in week 10 with 2 weeks to go. Trichomes still mostly clear. The plant that this one was cloned from did the same thing in late flowering well before the 12 week harvest. Bud from it was fair at best. I know that leaves can start dying in late flower, but these start dying 8 weeks into the 12 week flowering period. Should I go up or down in ph when watering plants closer to harvest? What am I doing wrong?
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Having the exact same issue... following -
I’m no expert but they look burnt to me. Either from too many nutes, too close to the lights, too much heat or a combinationComment
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Are you spraying the leaves with anything like Neem oil to control spider mites or bugs? Or using any foliage nutrients that you are spraying on the leaves? Looks like light damage to the leaves after the leaves have been sprayed while the lights are on or just before the lights were turned on. Let us know so we can continue to troubleshoot.Last edited by Korn; 04-30-2020, 03:42 PM.If you bend you will be less likely to break.Comment
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I've not been spraying them with anything. Just nute/water mix. I've seen photos of leaves that have light damage and they are similar (kind of) to mine, but I'm growing 18 inches under 1000w leds. That wouldn't cause light damage would it? The area is around 70 degrees and 45% humidity, so it shouldn't be a heat problem. Thanks Korn
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billy64boy How big are the pots? If 3 or 5 gal I'd cut the nutrients and finish with Ph. water and molasses. Good luck bro.Comment
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i'm not a soil grower but....
it looks like high N (nitrogen, dark green)
either calcium deficiency spots or Ph spots...
those pics taken towards lights out? (leaves look droopy, my auto's do that as well towards lights out. daytime leaves are nice & perky)
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Yes Patty, those pics were taken towards lights out, but leaves are droopy all the time. Not droopy like they got too hot or are thirsty, but like they are getting brittle and dying. Interesting that you mention how dark green they are. As I said earlier, I am giving all plants in different stages of flowering the same bloom nutrients. Maybe I should reduce the nutes half way through flowering? Thanks.
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Talking about the picture on the right. What is that thing in the middle of the bud? It looks like a seed.
Your hairs look pretty well all orange which means they're pretty well close to done flowering. If you've been giving too much N during flowering, you're going to have the toxicity issues. Stop all nutes. Flush when the soil is dry enough to water, as others have said.
This is a question for the Old Heads out there. If a plant has nitrogen toxified leaves, is it better to remove the leaves to keep the plant from having to recover from the damage or better to leave the damaged leaves so the flowers don't pull out the extra N the leaves are eating?C'mon, mule!
Coco/perlite
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Damn Gingerbeard good eye, that looks exactly like a seed. Inquiring minds must know... -
Yes Ginger, that is a seed. I didn't mention it because I figured I would only tackle one problem in this post. I guess she/it is technically a hermie. I didn't notice it until 8 weeks into flowering and I have only seen a half dozen or so seeds and no seeds on the plant next to it which is only 2 weeks behind this one. If it had happened in early flower I would have chopped it down. But, I figured I would just let them grow to harvest, learn from my mistakes, and pay closer attention next time. If I don't get discouraged and give up this hobby. As I told Primo, I've already started flushing with 2 weeks to go. In the future, should I cut back on the nutrients half way through flowering to avoid nitrogen toxicity? I'm using 4-8-7 nutrients. Is that too high in nitrogen for late flowering? Thanks Gingerbeard
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Again, I haven't faced this particular problem, yet. My information comes from what I've seen others go through.
I have three bottles of nutes. One is real low NPK, a supplement. The veg nutes are 6-8-4. The flowering nutes are 2-4-4. You can see how the nitrogen drops by a third, the phosphorous by a half when flowering starts. Flushing is never a bad idea. I like to call it 'watering'. As long as you don't add anymore N, at the moment, you might recover. At least, it shouldn't get any worse.
I'm throwing out the question, again, about it being better to remove toxic leaves during flowering or leave them alone? My guess would be to remove them, being so late in flowering?C'mon, mule!
Coco/perlite
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billy64boy The molasses feeds the micro organisms in your soil, it's good to use for the whole grow. In flower it gives extra potassium which your plant needs.Comment
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I’m late to this thread but I agree with those that have diagnosed a nitrogen toxicity. Since your experiencing the same condition on identical genetics I would guess that this particular strain needs less nitrogen than what you’re used to giving. If the bud was only average, I’d cull the genetics in my garden. I prefer to run plants that adjust to my feeding habits rather than adjusting my feeding habits to the plants. I’m not a big fan of picky feeders......unless they’re top notch producers.Failure is an opportunity for improvement!!
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