Ooh Hazel ,what devastation !Sorry I have no solution for you but I always try a strong solution of soapy water ( washing-up liquid ) frothed up to smother whatever is underneath - works with aphids !! However a great capture of one of the culprits !!
Such a shame Hazel its a devil of a job to remove there are fungicides on the market such as Provanto 86600250 Fungus Fighter Plus that claim to stop it but we have no experience of using them sorry:)
A great capture and details. Sorry you have caterpillers again this year. I think I would try throwing bird seed down around the bushes and hope the birds find the caterpillers as well.
Thank you everyone for your comments and especially for possible solutions to the problem, which Ray is going to try. I thought the webby bits were defunct from last year and could hardly believe my eyes when more tiny caterpillars started hatching out.
@shutterbug49 @joysabin @wendyfrost @phil_howcroft @carole_sandford @milaniet @pcoulson @haskar @seattlite @365projectmaxine @happypat @beryl @gardencat @30pics4jackiesdiamond @casablanca