Cutleaf coneflower

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 Cutleaf coneflower Plant Courtesy, Art Chappelka, Auburn University

Healthy Cutleaf coneflower Flowers Courtesy, Art Chappelka, Auburn University

Ozone Injury to Cutleaf coneflower leaf Courtesy, Art Chappelka, Auburn University

Cutleaf coneflower Leaves with Ozone Injury Courtesy, Art Chappelka, Auburn University