Tall milkweed

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 Tall milkweed Berries Courtesy, Natural Resources Conservation Service USDA

Healthy Tall milkweed Courtesy, Natural Resources Conservation Service USDA