Climbing Hydrangea

Asked August 17, 2019, 9:14 AM EDT

Hello! There is something all over my climbing Hydrangea. They are white and hard and prolific. They're even all over the brick where the Hydrangea is climbing.

Baltimore Maryland vines cottony camellia scale climbing hydrangea

1 Response

This looks like cottony camellia scale on the foliage. This is a soft scale, a sucking insect. Honeydew and sooty mold are the major problems caused by this insect.
In june, females die and may fall off, leaving only white ovisacs. Immatures hatch through June and remain on the underside of leaves or bark through the winter.
At this point, we recommend that you spray with a dormant oil after leaf drop. Follow label directions.

Marian