We have an ornamental tree in our garden and it is completely covered in white little dots. They look like eggs or larvae, but I’ve never managed to see them move.
This is in Spain in case that’s relevant. More pics in comments.
Thanks!
We normally have a ton of wasps later in the summer, which is a problem of its own because they become very aggressive and territorial. We’ll try to mitigate the scale, though it seems a bit late already.