Blue elderberry

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 Blue elderberry Plant with Flowers and Berries Courtesy, USDA PLANTS Database

Healthy Blue elderberry Plant Courtesy, USDA PLANTS Database

Healthy Blue elderberry Branch with Berries Courtesy, USDA PLANTS Database

Close-up View of Ozone Injury to Blue elderberry Leaf Courtesy, USDA Ozone Biomonitoring Program

Ozone Injury to Blue elderberry Leaves Courtesy, USDA Ozone Biomonitoring Program

Close-up View of Ozone Injury to Blue elderberry Courtesy, USDA Ozone Biomonitoring Program