Sycamore tree severely infested with invasive shothole borer-caused Fusarium Decline (ISHB-FD) showing dieback.

A tall sycamore tree with very few leaves growing in a lawn next to a pathway in a park. Irvine, Orange County Credit: Beatriz E. Nobua-Behrmann, Irvine, Orange County
Credit: Beatriz E. Nobua-Behrmann, Irvine, Orange County