Tree diseases

Bacterial Leaf Scorch (BLS) is a chronic disease caused by the bacterium, Xylella fastidiosa, which infects …

Beech bark disease is a lethal problem occurring in American Beech (Fagus grandifolia) throughout much of th…

Beech leaf disease (BLD) is an emerging disease caused by a foliar-feeding nematode, or microscopic roundworm, known …

Black canker and scab of willow (Salix) are two diseases that often occur together. The term willow blight i…

Black knot fungus (Apiosporina morbosa, formerly known as Dibotryon morbosum and Plowrightia mo…

Black root rot is the common name of a root disease caused by the fungi Berkeleyomyces basicola and B. r…