Weeping cherry tree
We have a lovely weeping cherry in our back yard that is producing gummy sap at its base and also where some of its roots pop up through the ground. Could this be a borer problem? If so, how do we treat the tree. Please see the attached photos. Thank you for your help! Ashley Burnham
Cherry trees can exude sap/gum due to any type of stress such as pruning cuts, wounds, cankers, or possible insect pests such as the peach tree borer. There are no chemical controls, and this pest is very common on weeping cherry trees.
Here is some further information about them: http://extension.umd.edu/hgic/shade-tree-borers Once borers are inside the tree, they cannot be controlled. They will grow into adults, emerge and fly away. Keep your tree healthy so they don't reinfest the tree by laying more eggs on it.
Borers attack stressed trees. Keep the tree in good health through proper pruning, planting, watering, and pest management. Keep a ring of mulch around the base of the tree to conserve moisture and keep weeds down. Make sure mulch is not thicker than two inches and keep mulch away from the base of the trunk.
Mulch piled on tree trunks provide a place for the peach tree borer adult (a moth) to lay its eggs. You should be able to see the roots flaring out from the base of the trunk--the base flare should not be covered with mulch or soil.