I have tiny oval white bugs on my Ash tree. The new growth leaves curl up into clumps. I don't know what they are or how to get rid of them. Can you help me? I have attached a couple of pictures.
White Bugs on My Ash Tree
Certified GKH Gardening Expert
This could be Mealybugs or Woolly Aphids.
Either insect can be treated with Neem OIl.
Here are a couple of links with more information.