Hello, help needed.

According to one of my books, Lucerne is a favourite (another Legume). How long do you think the larvae will survive until you manage to find food for them? I would just go out and about and find somewhere that any clover grows. Try them on that even though it is nearly always white clover. You could also try sprouting seeds of Alfalfa? Green manure seed often has several types of Legume in their mixes. A bit late but you could have these up and running for the larvae next time you get some.

Just noticed your online name, you don't have any peas growing in your garden or allotment?

Hi, pleased you are trying to help the Clouded Yellow. My books say they feed on lucerne, clovers, related peaflowers and vetches. If you are able to get out into the countryside you will find plenty of clovers and vetches. I'd pick a reasonable quantity and let the caterpillars choose! Have you a neighbour with very late sweetpeas or everlasting pea? Might be worth a try!