Look for products containing propiconazole, thiophanate-methyl, fluoxastrobin, strobilurin, and azoxystrobin — these have shown good results in managing this disease. However, it's crucial to follow ...
Fungicides on the market are ineffective against infected plants, but they could prevent the disease. Spray the plants with fungicides labeled for hostas that contain sulfur, azoxystrobin, copper ...