Diagnosis help

[Crazy_Jimmy]

I’ve been seeing a lot of discoloration and damage in mature red Oaks lately. I was thinking it may be the early onset of hypoxilin canker but I’m not 100% ,sure any help would be appreciated. Thanks.

 

[colb]

Patchy or crown-wide?

 

[Rusticus]

I've seen some goofy stuff from that bad freeze back in 2021. I know Fort Worth got it worse than central Texas. Do you think it could be issues related to freeze damage?

 

[ATH]

Describe the discoloration...across the leaves, just between the veins, etc???

How's the moisture been last couple of years?

Are the leaves normal shape and size?