what is a canker on a tree

Northwest Arkansas Democrat Gazette: IN THE GARDEN: Oak tree appears to have hypoxylon canker, which has no cure IN THE GARDEN: Oak tree appears to have hypoxylon canker, which has no cure We saw some dieback in trees coming out of winter. In some cases, it is environmental stress from drought stress and winter temperature extremes. It may also be a canker disease.

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Cankers infect trunks ... NOLA.com: Citrus canker, a serious bacterial disease, has spread to local fruit trees Citrus canker, a serious bacterial disease, has spread to local fruit trees Gardeners, this week we are discussing Asian Citrus Greening and Citrus Canker and how we can recognize each of the two citrus diseases. There are numerous plant diseases that may attack citrus trees, ... Science Daily: Fungi that causes pine ghost canker detected in southern California trees Fungal pathogens that cause pine ghost canker are infecting conifer trees in urban forests of Southern California, scientists found.