Experts pls help! Yellowing leaves

I have been growing this strain a while and I have never had this problem.

I am coming out of a winter into a summer with this flower cycle, so my humidity has been high and low but I don't know exactly what it was. All I know is that I have had other symptoms that indicated the plant is stress by the change in humidity.

However;

My problem is with yellowing leaves. Now to explain, it is not nute burn. There is no burning on the edges. The whole leaf is turning yellow but otherwise it looks healthy. I just don't get it. Is it a dificiancy perhaps?

Now I am having this on plants that will be harvested in 6 weeks max, the closer they are to harvest, the more yellow the leaves. The buds and small bud leaves look fine though, nice and green and nice buds. But for how long .....

The whole plant has this yellowing all over, the only green is the buds and bud leaves.

PLEASE HELP, any INFO or HELP will be greatly APPRECIATED.

Nitrogen dificancy, The plants pulling nitrogen out of the leaves. Bad news is you're probly gonna lose 90% of those leaves, however the plant will be fine after some growbig (or whatever)

Flowering plants eat Nitrogen like there's no tomorrow. Feed it nute mix with more N.

Canibal said:

Nitrogen dificancy, The plants pulling nitrogen out of the leaves. Bad news is you're probly gonna lose 90% of those leaves, however the plant will be fine after some growbig (or whatever)

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dudeoflife said:

Flowering plants eat Nitrogen like there's no tomorrow. Feed it nute mix with more N.

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Guy's thanks so much for a 100% correct analysis. I have increased the Nitrogen and the green is coming back into some of the leaves. Many thanks.

Fox Farms recommends a two week period in the middle of flower where you add Grow Big to the nutes for the Nitrogen.

I see this question asked a lot on the forums and thankfully, it is an easy one to diagnose. One of the few times pictures are not needed....

Usually you can avoid a nitrogen defeciency in flower by using nitrogen the first2-3 weeks of 12/12.Too many people believe the change in photoperiod indicate a change in fertilizer also,this couldnt be farther from the truth.The most vigorous vegetative growth during the plants life occurs during the first 3 weeks or so of 12/12.The plant is throwing out foliage and stretching like crazy,nitrogen is sorely needed during this phase

sparkjumper said:

Usually you can avoid a nitrogen defeciency in flower by using nitrogen the first2-3 weeks of 12/12.Too many people believe the change in photoperiod indicate a change in fertilizer also,this couldnt be farther from the truth.The most vigorous vegetative growth during the plants life occurs during the first 3 weeks or so of 12/12.The plant is throwing out foliage and stretching like crazy,nitrogen is sorely needed during this phase

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Make's sense. Thanks for your comments, hopefully this helps a few other people also.

TheDude0007 said:

Make's sense. Thanks for your comments, hopefully this helps a few other people also.

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Yeppers. You'll get a bigger yield, too.

Plants actually use more N than P even during flowering-- except the last two weeks.

Ok it has been abouit 4 days now since I gave em a good nitro boost. My word the green is back and is it green. The nitro surely did the trick.

Glad i could help, you got any pics?

TheDude0007 said:

Ok it has been abouit 4 days now since I gave em a good nitro boost. My word the green is back and is it green. The nitro surely did the trick.

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Thanks for the follow up. Most people seeking help never do follow up when their problem was solved.

Serapis said:

Thanks for the follow up. Most people seeking help never do follow up when their problem was solved.

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Thanks for the thanks lol. But yes you'r right, they don't. For me it is about helping others also. BTW They are looking better still.