Tree diagnosis

[coolbrze]

A friend of mine (here in Northern VA) is having some issues w/ Austrian Pines & Blue Spruce. Said he sprayed for Needle Blight but it's not helping. What are some common issues w/ these trees? He didn't give me symptoms or pics, I'll call him later & find out specifics. Said he's also got problems w/ Hemlocks & Yoshino Cherrys. Any suggestions would be appreciated.

 

[Jace]

Here in the midwest, Austrian Pines commonly get Dothistroma and Diplodia blights after they reach 10 yrs old. Colorado Spruces commonly get Rhizosphera needlecast, dying from the bottom up. All 3 diseases are a fungis and spray treatments are in the spring around bud break, and thereafter. 3x. Have to read fungicide label for specs. Chlorothalonil is a good fungicide for these.