Dark fungal fruiting structures form on the surface of infected needles. Microscopic examination of the spores reveals dark, multicelled spores that are longer than they are wide. Affected needles fall giving the shrub an open, bare appearance. Cercospora sequoiae var. Since the fungus overwinters on the plant, spores are present all year.
Infection can occur whenever temperatures are mild and moisture is on the needles.
It is best to remove the plant rather than attempt control this disease with fungicides. Kabatina Twig Blight Tips of branches die and turn brown or ash-gray. These remain on the shrub for many months. Larger branches can be invaded and girdled. Microscopic examination reveals oval, colorless spores.