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UPDATE! Got it figured out. Man this one really bugged me and took almost 4 hours of research to figure it out. The problem was Kermes Scale and Botryosphaeria. Oak Tip Flagging — This summer you may have noticed that many black and pin oak trees had brown leaves at the tips of their...

Seeking the help of the extension sounds like the best idea, I will call them to see what samples I need to gather. The oak is planted in a fertilized lawn area, and he did recently fertilize.

Remove infected trees Trees that are infected with or have died from oak wilt should be removed and properly treated to prevent development of spore mats. These treatments include debarking, chipping or splitting, and drying the wood. Covering dead wood with plastic, burying the edges for 6...

No one else has any input? Guess I'll give the client the bad news. On a side note, I read that to prevent furthur spread of the disease, I need to wait until the tree is completely dead before I remove it, and furthur that I should trench around the tree at the dripline of the canopy to...

Crap... I didn't think it was in Colorado yet. I did do a cross section and a peel, and saw the brown circle in the cross section and the stripes in the peel. I'll give it another couple of days to see what everyone else has to say. Thanks Willie.

Hey guys, I really need your help with this one. Client calls me and says that over the last week, leaves on his oak tree started dying and falling off. I think this is Oak Wilt, but I am not sure. I treated the tree with Imidichloprid for aphids about a month ago. The tree is a Black Oak...