What are the symptoms of leaf spot disease on Japanese euonymus?
Symptoms of leaf spot disease on Japanese euonymus: the disease occurs on new leaves, producing small yellow spots that later expand into irregular large spots up to 1.5 mm; the edges of the spots are raised, with a relatively wide brown margin, and beyond the raised edge there is an extended yellow halo. The center is yellowish-brown or grayish-brown and densely covered with small black dots. These are the stroma of the pathogen; under a magnifying glass, the dots appear as black downy tufts. In severe cases, the leaves drop off within the same year.
Symptoms of leaf spot disease on Japanese euonymus: the disease occurs on new leaves, producing small yellow spots that later expand into irregular large spots up to 1.5 mm; the edges of the spots are raised, with a relatively wide brown margin, and beyond the raised edge there is an extended yellow halo. The center is yellowish-brown or grayish-brown and densely covered with small black dots. These are the stroma of the pathogen; under a magnifying glass, the dots appear as black downy tufts. In severe cases, the leaves drop off within the same year.