yellowing leaves mid flower (wk 6)

K

krustyphish62

Member
OK, I think i got some issue going on. middle of week 6 flower, and all my leaves are turning yellow. plants are in 3 gal pots, soil is Greenfield's roots organic. temps 77-80, humidity 55-65%. (really hot and humid where i am at the moment) ph 5.8-6.5
gave them fox farm big bloom in transition , then been using g.h. florabloom. my feed schedule is f-w-w-w-f. going a little lite on dose. as i have run off @ 850-1,700ppm,(ph 7). was using cal-mag, then switched to mag- sulfur. my question is should i give them a little pure blend grow, as i think there to low on nitrogen, or is it to late for the nitrogen. any help in this matter would be gratefully appreciated .WIN_20210618_08_45_52_Pro.jpg
 

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jondamon

jondamon

Well-Known Member
krustyphish62 said:
OK, I think i got some issue going on. middle of week 6 flower, and all my leaves are turning yellow. plants are in 3 gal pots, soil is Greenfield's roots organic. temps 77-80, humidity 55-65%. (really hot and humid where i am at the moment) ph 5.8-6.5
gave them fox farm big bloom in transition , then been using g.h. florabloom. my feed schedule is f-w-w-w-f. going a little lite on dose. as i have run off @ 850-1,700ppm,(ph 7). was using cal-mag, then switched to mag- sulfur. my question is should i give them a little pure blend grow, as i think there to low on nitrogen, or is it to late for the nitrogen. any help in this matter would be gratefully appreciated .View attachment 4925725
Click to expand...
I would say you are spot on with your estimation on what’s wrong.

personally I never cut out nitrogen during flowering.

Other people say to lower it. I’m not of that opinion as long as you aren’t over feeding.

Look at what your nutrients currently have as far as nitrogen content is concerned.

if your N is 2% or higher then I would just look to increase your F and knock off a W from your schedule.
 
ilovetoskiatalta

ilovetoskiatalta

Well-Known Member
krustyphish62 said:
OK, I think i got some issue going on. middle of week 6 flower, and all my leaves are turning yellow. plants are in 3 gal pots, soil is Greenfield's roots organic. temps 77-80, humidity 55-65%. (really hot and humid where i am at the moment) ph 5.8-6.5
gave them fox farm big bloom in transition , then been using g.h. florabloom. my feed schedule is f-w-w-w-f. going a little lite on dose. as i have run off @ 850-1,700ppm,(ph 7). was using cal-mag, then switched to mag- sulfur. my question is should i give them a little pure blend grow, as i think there to low on nitrogen, or is it to late for the nitrogen. any help in this matter would be gratefully appreciated .View attachment 4925725
Click to expand...
IMHO plants need nitrogen through the entire cycle, you can taper it towards the end but I will give it full strength through week six(FF trio in my case). I also think cal mag helps with uptake throughout all cycles. Three gallon pots need attention towards the end because there is not enough medium to hold it through 8 or 9 weeks.
In your case I make a nutrient solution at full strength and then give(for instance depending on your watering regimen) .5L h20 with .5L of nutrient solution every other day and see how they react. Usually in three to five days the tops will get lush green. The yellowing leaves will mostly fade and fall. She is pulling nutrients from her own leaves. This is just through my experience.
 
myke

myke

Well-Known Member
All good advice above,needs N.Maybe to late but next time keep feeding veg nutes mixed with bloom.
 
K

krustyphish62

Member
Thanks everyone thought the foxfarm big bloom would have carried me thru, lesson learned. I think I'll give them a very weak dose of nitrogen, see if it helps, just worried about the end product ( smoking it). Just gonna make sure to flush it good .
Again thanks for confirming my suspicions
 
osowhom

osowhom

Well-Known Member
krustyphish62 said:
OK, I think i got some issue going on. middle of week 6 flower, and all my leaves are turning yellow. plants are in 3 gal pots, soil is Greenfield's roots organic. temps 77-80, humidity 55-65%. (really hot and humid where i am at the moment) ph 5.8-6.5
gave them fox farm big bloom in transition , then been using g.h. florabloom. my feed schedule is f-w-w-w-f. going a little lite on dose. as i have run off @ 850-1,700ppm,(ph 7). was using cal-mag, then switched to mag- sulfur. my question is should i give them a little pure blend grow, as i think there to low on nitrogen, or is it to late for the nitrogen. any help in this matter would be gratefully appreciated .View attachment 4925725
Click to expand...
you could try some fish emulsion mixed with water for fast N uptake unless you have a lockout issue
 
K

krustyphish62

Member
It's gotta happen now. Plants need to be watered like now, but thanks for advice.
Will be sure to have that on hand for next time. Oooops there won't be a next time
 
jondamon

jondamon

Well-Known Member
krustyphish62 said:
Thanks everyone thought the foxfarm big bloom would have carried me thru, lesson learned. I think I'll give them a very weak dose of nitrogen, see if it helps, just worried about the end product ( smoking it). Just gonna make sure to flush it good .
Again thanks for confirming my suspicions
Click to expand...
You may want to read this when it comes to flushing.
www.rxgreentechnologies.com

Cannabis Flushing Research Study

In our research study, RX Green Technologies evaluated the effects of different flushing times on chemical profile, flavor, and smoke of cannabis flower.
www.rxgreentechnologies.com www.rxgreentechnologies.com

DO NOT BE WORRIED ABOUT SMOKING NUTRIENTS

You cannot remove nutrients from a plant by using copious amounts of water at the rootzone.
 
ilovetoskiatalta

ilovetoskiatalta

Well-Known Member
krustyphish62 said:
Thanks everyone thought the foxfarm big bloom would have carried me thru, lesson learned. I think I'll give them a very weak dose of nitrogen, see if it helps, just worried about the end product ( smoking it). Just gonna make sure to flush it good .
Again thanks for confirming my suspicions
Click to expand...
worry about the cure
 
Jules1976

Jules1976

Well-Known Member
jondamon said:
You may want to read this when it comes to flushing.
www.rxgreentechnologies.com

Cannabis Flushing Research Study

In our research study, RX Green Technologies evaluated the effects of different flushing times on chemical profile, flavor, and smoke of cannabis flower.
www.rxgreentechnologies.com www.rxgreentechnologies.com

DO NOT BE WORRIED ABOUT SMOKING NUTRIENTS

You cannot remove nutrients from a plant by using copious amounts of water at the rootzone.
Click to expand...
I saw an interview that Shane from Migro had with Dr Stephanie it was very interesting and basically the study she did proves flushing made no difference in fact might actually be worse as you starve your plants when flushing please watch the interview if you can't be bothered to read it lol it's on the Migro YouTube channel
 
xtsho

xtsho

Well-Known Member
ilovetoskiatalta said:
IMHO plants need nitrogen through the entire cycle, you can taper it towards the end but I will give it full strength through week six(FF trio in my case). I also think cal mag helps with uptake throughout all cycles. Three gallon pots need attention towards the end because there is not enough medium to hold it through 8 or 9 weeks.
In your case I make a nutrient solution at full strength and then give(for instance depending on your watering regimen) .5L h20 with .5L of nutrient solution every other day and see how they react. Usually in three to five days the tops will get lush green. The yellowing leaves will mostly fade and fall. She is pulling nutrients from her own leaves. This is just through my experience.
Click to expand...
Your opinion is correct. It's a scientific fact that plants need nitrogen throughout their entire cycle.

"Nitrogen is actually considered the most important component for supporting plant growth. Nitrogen is part of the chlorophyll molecule, which gives plants their green color and is involved in creating food for the plant through photosynthesis. Lack of nitrogen shows up as general yellowing (chlorosis) of the plan"
 
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