Signs and symptoms of Cytospora canker/dieback in various fruit and nut crops in California. A. Twig dieback in sweet cherry. B. Twig and scaffold branch dieback in French prune. C. Pimpled-bark indicating underlying asexual fruiting bodies in a sweet cherry branch affected with Cytospora canker. D. Below bark, asexual fruiting bodies associated with Cytospora canker of French prune. E–F. Cankers and wood discoloration associated with Cytospora canker of sweet cherry.