By Maos
United Kingdom 
What can I do about white bits which feel kind of plasticiky on the underside of my Japanese acers -
4 Jul, 2013
Answers
I have since found out they are scale insects and that insectide should be applied at the crawler stage......
Thank you for your response
10 Jul, 2013
Lovely patches of woolly aphids which need spraying off with a mild strength insecticide.
10 Jul, 2013