white tiny ? all over the bark of numerous trees

Asked May 23, 2019, 8:53 PM EDT

What are the small, white tiny marks on the bark? they are on this tree and the bush next to it in the garden. the bark is covered with them, from top to bottom.

Baltimore County Maryland shrubs white prunicola scale prunicola scale cherry laurel scale tree pest insects and mites

1 Response

The cherry laurels have white prunicola scale, a sucking insect. Here is information and mangement: https://extension.umd.edu/hgic/topics/armored-hard-scale-trees-and-shrubs

The tree trunk is showing scale also, but it may be a different species of scale. We need to know the species of the tree in order to identify the scale. Please tell us to send clear photos of the leaves (single leaves and multiples) so that we can pinpoint the species.

Ellen