Iowa Bur Oaks Face Terminal Fungus « Oskaloosa News:
Iowa’s overall urban tree canopy has 12 percent tree cover, of which, 3 percent of the trees are bur oak. The estimated landscape value and removal cost for urban trees is more than $500 million. Homeowners can have leaves tested for the disease by sending samples to Iowa State University’s Plant and Insect Diagnostic Clinic to have the fungus confirmed. Information on the click and how to submit samples is online at http://www.plantpath.iastate.edu/pdc/.