What problems affect Kerria japonica?
What problems affect Kerria japonica? Problems. Plants sometimes become infected with kerria twig and leaf blight, a fungal disease caused by Blumeriella kerriae, which produces leaf spots and stem lesions, and may result in severe defoliation. Numerous small red-brown spots with purple borders form on foliage. Biology. The cause of twig and leaf blight on […]
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