Is this something I should worries about

[Cobain420]

Hi guys, just noticed some spot on one of my leaf and was wondering if it was harmful or just normal.

Also I had Powdery Mildew early on my 4 plant but I was able to stop the spread with organic fungicide.
Would it be a good idea to cut the leave that were infected and are still white


Ty for your time and hope you can help me out

 

[LabRat]

I would certainly cut off any suspect leaves. Even a spray with baking soda, 1 tsp/500ml, will help get rid of it and keep it away. Makes the surface of the leaves alkaline and PM doesn't grow there. I've used dilute potassium silicate for the same thing in the past and it worked great.

Nasty stuff.

Good luck!

 

[armanidog]

Sulphur also will control fungus and mildew. There are shaker cans with sulphur available. And there is a wettable powder available to mix up with water.