White spots on Red Oak Leaves

[150class]

Anyone know what these spots are and what is causing it?



Thank you

[Dusty Britches]

I have the exact same thing and I showed it to the guy at the Co-Op. It is powdery mildew. Easily treated with Hi Yeild Fungus Control with cholorathanil.

He said it is caused from a lot of rain or overhead watering.

[Uncle_Milty]

Its the global warming and acid rain!

[150class]

I have the exact same thing and I showed it to the guy at the Co-Op. It is powdery mildew. Easily treated with Hi Yeild Fungus Control with cholorathanil.

He said it is caused from a lot of rain or overhead watering.

I had it narrowed to leaf spotting or powdery mildew so was curious.

Thank you

[dallred]

I've had the same condition on my Red Oak (in Rockwall) the last two years. According to Neil Sperry, it's common leafspot and will not harm the tree.

[dhall1414]

I've got the same thing on my oak trees. Last year it was just on one of them but this year they all have it. I've got mostly burr oaks and a couple in not sure of. I remember that last year the one tree who's leaves had the spots ended up dropping it's leaves before the others did.

This has been bothering me for 2 years, thank you.