Scouler's willow

Ozone injury usually appears as black or purple spots (stipple), yellow or white bleached spots (chlorotic mottle, needle tip burn), or leaf browning (necrosis). Ozone may also cause premature leaf drop (senescence).

Healthy Scouler's willow Courtesy, Central Washington Native Plants

Healthy Scouler's willow Leaves Courtesy, Virginia Tech Forestry Department

Ozone Injury to Scouler's willow Courtesy, LWF Ozone Injury Databank

Ozone Injury to Scouler's willow Leaves Courtesy, LWF Ozone Injury Databank