Unusual yellowing

Smiffy2k9

Well-Known Member

• May 22, 2012

• #1

i cant upload pics so ill explain best i can,

after transplanting a seriusly root bound plant and flipping to 12/12 the plant started to get yellow spots on some leaves, a couple of days later and the yellow spot has spread outwards from the center of the leaf, what cold it be.? i dont think its N burn because it dosnt look like typical N burn,

before the transplant the plant was watered with just pure water and after the transplant i watered with 1/4 strenght nutes

p.h 7 grown in soil 250w hps​

 

Dr Gruber

Well-Known Member

• May 22, 2012

• #2

are you using fox farm soil by chance? veg or bloom nutes? and what is the NPK value?

 

Smiffy2k9

Well-Known Member

• May 22, 2012

• #3

nope just soil out of hardware shop nothing special, no veg nutes and the nutes i used are 5:3:8

 

Dr Gruber

Well-Known Member

• May 22, 2012

• #4

sounds like too muck K for early flowering. its happened to me many times. i didnt understand until i read this....

https://www.rollitup.org/marijuana-plant-problems/158144-never-ending-abuse-phosphorous-bloom.html

hope it helps...

 

PixiDustr

Active Member

• May 22, 2012

• #5

are the spots little tiny dots of yellow? I had that happen to me. I added 3 tsp of molasses to their water and that seemed to fix the problem.

 

Smiffy2k9

Well-Known Member

• May 22, 2012

• #6

nope it was just a single spot on a few leaves that then slowely started spreading out and turning the leaf yellow

 

PixiDustr

Active Member

• May 22, 2012

• #7

View attachment 2179560 Here is a chart that has helped me in the past.

 

Smiffy2k9

Well-Known Member

• May 22, 2012

• #8

i wouldnt say it looks like any of them, the leaf is a nice healthy green and feels moist but the yellow bit is bright yellow/white and dry felling

 

jpockets420

Well-Known Member

• May 22, 2012

• #9

Did you spray them down with water and leave them under the lights?

 

Smiffy2k9

Well-Known Member

• May 24, 2012

• #10

nope i dont spray down with water,

i think i founf out what the problem is, my light was too close and sorta bleching the leafs, moved the light further away and it seems to have stop the yellowing