"Charles Thorpe" wrote in message
...
David W.E. Roberts wrote:
snip
This morning the air is full of (I think) hoverflies. These look
like semi-transparent wasps. It almost looks like snow blowing
horizontally,

Well, I've just come in from the garden, after being amazed at how
many there were - thousands of them. Lots of butterflies too, only
white ones though.

Do they eat white and blackfly, I've noticed that over the last few
days, they are much reduced. I was thinking the soapy water and
squishing them was gradually working, but maybe the hoverflies are
having a feast!
snip

Good point - I wonder what they do feed on?
Whatever it is, there had better be a lot of it!