need help fast! invasion of lace cap hydrangea
Our beautiful blue lace cap hydrangea is not doing well. It has been invaded by many many tiny white spores (? or maybe they are bugs?) that have taken up residence under the leaves and on the old wood of the trunk and stem (they are not on the new growth...).
If anyone is familiar with this problem please let us know. Any help will be greatly appreciated!
Here is a link that might be useful: pictures of problem