Leaf blight ? Or something in week 5 flowering. PLEASE HELP!

Muskegman

Muskegman

Well-Known Member
Pretty sure I have leaf blight. Posted a week ago and no responses. It started off on just a few leafs and now it's showing up everywhere . I thought it was maybe nute burn or lights were too close . So I moved light further away and flushed it. After waiting for next watering I fed it the same as usual and nothing is changing . Maybe I'm over fertilizing it. I'm using 2tps of tiger bloom per gal of water. Nothing changed and is happening to new leafs. Should I flush again and try just water or is this for sure blight ? My PH is always 6.5I'm growing in FFOF/light warrior, feeding with FF tiger bloom. Should i have cut it down ? I'm noticing that other plants are showing signs that are a little different, like little round discolored spots that are a cream color. I've just cut them off . Some help would be ver appreciated! I'd hate to harvest now, just starting to get big buds. If it is blight, could I use the baking soda /vegetable oil trick? I didn't know if that's a good idea with buds being present, maybe sulfur ? I don't k ow what to do
 

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Muskegman

Muskegman

Well-Known Member
Also, my temps are 75f and RH is at 55. Other plants tha t were in same room were fine through life of plant . This is the only one doing this specifically.
 
Muskegman

Muskegman

Well-Known Member
Yea. Nothing . I have noticed it's not draining as well as the other plants maybe that batch of soil didn't have enough perlite ? The run off water was tested and the PH was like 5.0 if that means anything .
 
Muskegman

Muskegman

Well-Known Member
I'd hate to chop it down. It's one of my best plants that's I've really been anticipating to see the outcome. I super cropped it and then tide the branches down. I wonder if it got some kind of infection from super cropping it. I don't know .
 
Mount

Mount

Well-Known Member
Looks like MG deficiency IMO... what is the PH of your soil? It could be Cal-MG deficiency too, IMO...During bloom cannabis plants require even more calcium and magnesium because of the heavy bud production. I am sure many others here will chime in with info who may have seen more of the situation you have. Not sure what your feeding is like? Looks like you defoliated quite a bit too... leaves are the food factories and taking off too many can have the adverse effect when it comes to using and storing nutes...
 
GrowerGoneWild

GrowerGoneWild

Well-Known Member
Muskegman said:
Pretty sure I have leaf blight. Posted a week ago and no responses. It started off on just a few leafs and now it's showing up everywhere . I thought it was maybe nute burn or lights were too close . So I moved light further away and flushed it. After waiting for next watering I fed it the same as usual and nothing is changing . Maybe I'm over fertilizing it. I'm using 2tps of tiger bloom per gal of water. Nothing changed and is happening to new leafs. Should I flush again and try just water or is this for sure blight ? My PH is always 6.5I'm growing in FFOF/light warrior, feeding with FF tiger bloom. Should i have cut it down ? I'm noticing that other plants are showing signs that are a little different, like little round discolored spots that are a cream color. I've just cut them off . Some help would be ver appreciated! I'd hate to harvest now, just starting to get big buds. If it is blight, could I use the baking soda /vegetable oil trick? I didn't know if that's a good idea with buds being present, maybe sulfur ? I don't k ow what to do
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Overwater and overfed.

1) Leafs show signs of iron chlorosis, see the green veins and yellowing.. overwatering will cause that.
2) PK is Immobile in soil, its hard to remove PK, and constant watering with a high PK fertilizer will or could cause lockout.
3) Tip burn usually shows overfed condition.
4) MG and Ca problems show as rust spots.
5) PH is too close to neutral.

If it was me I would add Calcium and MG then make sure your PH slightly lower than what its at. Cal/Mag or Lime and Epsoms.. then adjust PH.

Just a suggestion..
 
Muskegman

Muskegman

Well-Known Member
Well, I'm gonna let it go bone dry then water with just cal-mag and water . I'll put the PH at 6.0
 
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