Infestation of Thousands of tiny caterpillars
My lovely multi stem silver birch has been stripped of leaves by thousands of little caterpillars. They are everywhere!
They're about 2cms long mustardy/beigy in colour, with a black head and six little black'feet' near the head. They have a black stipe down each side.
What are they and how can I get rid of them before they eat more of my little garden!
Thanks in anticipation.