I noticed a couple of small shrubs I planted last year are now covered in 100s of Greenflys some are eggs and some are moving around on legs. What is the best way to get rid of this menace as my plants are dying
If your shrubs are sturdy, a good blast with a fine jet of water from a hose, should get rid of them.
I managed to get rid of them from my Acers last year, using this method.