yellowing bottom leaves

the bottom leaves of my plants are turning yellow, and the tips of my leaves are getting brown. the plants are in the 4th week of flowering and other than the bottom leaves turning yellow they look great. my camera is dead so no pics but if it helps i am growing in mg organic soil with 20% perlite. the leaves are not crispy just turning yellow and then dying.

Is there alot of this going on? A few lower leaves dying off in flowering could signify the plant is coming to the end of it's life cycle. Have you changed your watering schedule or added any nutes lately? If you have not added nutes at all since they got in that pot, perhaps the time released nutes in the MG have been absorbed.

no ive been adding nutes and i honestly thing i over done it but i dont want to flush and cause more problems.

Flushing will likely cause more issues than good in MG. I would stop adding nutes for a while, pull the dead leaves off. And if you start adding nutes again, smaller doses. She is 1/2 way done flowering now. She probably won't need any more than what is in the soil. But if the yellowing persists, again smaller doses 1/4- 1/2 strength max.

Personally, I'd guess phosphorus or nitrogen. Since you are in flowering, I'd guess its time to up your phosphorus amount, around now the nitrogen is not as important and is not used as much. Phosphorus is very important for flowering especially right after the initial stretch after turning to 12/12. The budding/reproductive hormones and the resin need more phosphorus than any other time in the plants life. Cannot stress that enough during this time. Also, remember that the NPK values are of the available product of the chelate. Nitrogen is the only on that is usually only nitrogen. The commercial labeling of lets say a 2-1-5 is actually 2-0.44-4.15. Excellent article about it in Urban Gardener.

http://urbangardenmagazine.com/2009/12/expert-eye-phosphorus-and-hydroponics/
hope this helps!

I would need to see a picture for this.

ive been using big bud in every 3rd watering if that helps.

hm, well is the yellowing pretty obvious? what i mean is it just 1 or 2 leaves? or is it pronounced,, like the entire bottom 1/2 of the plant? every-so-often, a leaf will fall off and die, thats normal. whats not normal is the bottom of the plant going yellow all together, thats usually a sign of Nitrogen deficiency.

you mentioned that the tips are withering/browning... are these the same leaves that are turning yellow? or all over? just on the top? bottom? where? lol. usually leaf tips having necrosis is a sign of too much nutrients.

your scratching your head now im sure cuz i just said not enough N, but too much nutrients. well yea. so am i. this is why pics help. you could have a nitrogen deficiency, and an abundance of another element, but thats hard to tell without pics. get some pics! use a cellphone or anything. either way, nitrogen deficiency is bad, but [random element] abundance is WORSE. so what do you do in the meantime, same thing your doing now, but dilute it 1/2 way (more).

that will keep them alive until ya get pics.

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bump?>>>>>>>>>>>>

that's normal. it happens week 4-5 again week 8 or 10 looks nice. if those yellow ones are covering a bud site trim it. if it gets yellow all over come back and talk us on riu feel free to read through my posts

just makes me nervous here is whole plant



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Just add a little N to your next feeding if you don't want yellow leaves. Plant looks great imo.

IF I found the right product.... Big bud, NPK: 0-15-40

You stopped giving it any N which you'll see as yellowing from bottom up in a plant.

Here's a great thread to read on the subject. https://www.rollitup.org/marijuana-plant-problems/158144-never-ending-abuse-phosphorous-bloom.html

have the buds continues to grow, or are they stunted a bit? have they begun the swell? looks pretty so far.

every thing looks good exept bottom leaves

I would not be concerned at this point...if you start seeing brown or necrotic dots on the yellowing leaves, that would indicate phosphorus deficiency. But I don't thin that is the issue. Go ahead and pull off the yellow leaves, they are'nt doing her any good anyway and may attract critters.

As a cannabis plant nears the end of it's life cycle, it will slow down it's N uptake in favor of P and K. It wants to get pregnant so it uses it's energy to enlargen it's budz. Same thing in all of nature. When a woman nears menopause her sex drive increases and her boobs start to sag. I hate to use that analogy but do you get where I am coming from? The yellowing bottom leaves are a natural occurance at this point. Adding to much N now will confuse her into thinking she is still vegging and stunt the bud development. Just pull the yellow leaves off and keep going.