What are the symptoms of flower root cancer?

Root cancer mainly harms cherry blossom, plum blossom, peach, rose, begonia, chrysanthemum, rose, fig, clove, crape myrtle, dahlia, carnation, begonia, geranium and other flowers and trees. Pathogens mostly infect the root neck and lateral roots, forming tumors of different sizes. The tumor was initially light brown, spherical or hemispherical, with soft texture and smooth surface. In the late stage of the disease, the tumor becomes dark in color, brown to dark, rough in surface, lignified in internal tissue and becomes a hard tumor. After several years of illness, serious illness will lead to the death of the whole plant.

Wet and alkaline soil is conducive to disease. The incidence of grafted seedlings is high. Spread through running water, irrigation water, underground pests and grafting tools.