get the hose out and blast it and it will knock them right of or spray with soapy water . failing that go to your local garden centre as they should have something to kill them of .

One of the many types of sawflies which attack almost every garden plant going. all you can do is spray with a suitable insecticide and take heart that they do not kill the whole plant only strip the leaves. The tree usually then produces a new lot which are not normally attacked.

I'd guess sawfly larvae too - as Owdboggy says, buy a suitable insecticide and spray.

My young birch was ravaged by the blighters last year - I attacked them with the powerhose as I didnt want to use insecticide incase the birds ate them.

Hope they don't come back this year :)

so basicly what i said lol . your all mind readers lol x . the blast with water is the safest and cheapest .

my friend with 50 or so bonsia trees often strips all the first leaves of as the second lot tend to growa lot smaller in keeping with the idea of bonsia . a bit of useless information lol .

if you use an insecticide you might kill off some baby birds whose parents are searching rather desperately for food for them because there's not much about in this dry weather.

i agree penny farthing so the blast with the hose is the one . i never use many chemicals in my garden if i can help it or in my pond or large tank come to think of it .