My Chinese elm has white stuff round the base, any ideas?
By Carolsan
Devon,
United Kingdom 
See picture
10 Mar, 2009
Answers
Brush it off gently or paint it with diluted insecticide, or if it's mould then use fungicide. Or has someone had a flour fight?
10 Mar, 2009
Previous question
Hard to tell from this magnification, but it could be root aphids.
10 Mar, 2009