Coniothyrium fuckelii , Cryptosporella umbrina , Coniothyrium wernsdorffiae , Cylindrocladium scoparium Do not plant stock with cankers. Remove infected canes making the cut immediately above a bud. Sterilize the shears with bromine disinfestant between cuts. Maintain even soil moisture and fertilization. Crown Gall Small white to cream-colored galls that form on stems may enlarge to 6 inches in diameter.
Galls can form on roots or stems.
Agrobacterium tumefaciens Do not plant infected material. Apply Agrobacterium radiobacter to protect healthy plants. Damping-off Cuttings fail to root, defoliate and die. Roots are killed. Pot and propagate in pasteurized media.