Gummosis is a nonspecific condition where sap leaks from a wound in the tree. It usually occurs when the tree has a perennial or bacterial canker, or is attacked by the peach tree borer. However, gummosis can also be caused by any wound to a stone fruit tree, including winter damage, disease damage, or damage from a gardening tool. If you see gummy sap leaking out of your peach, plum, cherry or apricot tree, it is probably gummosis.

Read more at Gardening Know How: What Is Gummosis: Tips On Gummosis Prevention And Treatment [ Ссылка ]

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