Outer half of fans shriveling up

A

A.k.a

Well-Known Member

Jul 19, 2021

• #1

8.5 week into flower, suddenly the leaves are looking weird. It’s been unusually humid the last week so rh has been 55-75%. The fan in the back right is the easiest to see what’s going on. Not every leaf is starting to do that but a lot.

 

WWNugs

Active Member

Jul 19, 2021

• #2

How hot it there? Fans will start to dwindle now that she is almost done.

 

A

A.k.a

Well-Known Member

Jul 19, 2021

• #3

Mid to high 70s.

It doesn’t look like normal leaf fade though, at least not like my other plants had where they just went yellow.

 

myke

Well-Known Member

Jul 19, 2021

• #4

P deficiency ?

 

mudballs

Well-Known Member

Jul 19, 2021

• #5

looks like you've been running that hotrod full throttle this grow...overfertilization

A heavy-handed approach to nutrients is ill-advised. Excessive doses of nitrogen-rich vegetative growth base nutes can cause clawing in leaves. Sometimes, they will even canoe. Similarly, overdoing it with the phosphorus and potassium during flowering will cause curly cannabis leaves and scorch the tips. Chlorosis is a common symptom in both cases

 

A

A.k.a

Well-Known Member

Jul 19, 2021

• #6

I’m thinking it’s verticillium or fusarium

 

thisbuds4u101

Well-Known Member

Jul 19, 2021

• #7

Looks like a heat problem to me or overwatering.

 

Wastei

Well-Known Member

Jul 19, 2021

• #8

A.k.a said:

I’m thinking it’s verticillium or fusarium

Click to expand...

Fusarium is often more dramatic than that. Every single leaf hanging because the plants vascular system is being eating from the inside out. They die in a couple of days.

I've only had fusarium a couple of times, and don't think that's it. More leaning towards low pH and overferting.