Silver Maple Blight

Possibly you can diagnose and treat phytopathology or parasitism in trees. If so, do you have any ideas on this black, black ooze that’s emanating from the bark of our giant silver maple?…

Mountain Ash with Die Off

Hi. I planted this 4-trunk Mountain Ash over 20-25 years ago. This summer finds a lot of gradual die-off of the top of one of the trunks. Any idea why this would happen? There are a few woodpecker holes here…

Hornbeam spots on twigs

Hello, I work at Sheridan Nurseries and I received this sample of a Hornbeam twig with black spots on the dead portions that did not come back to life after this winter’s harsh weather. Do you think it IS a…