Do you have any linseed? If you scratched the stubble around while planting the cover, some volunteers may come up which will be handy. Linseed, some vetch and volunteer oats would be good.looking for a green manure cover to put between winter oats and spring barley. I have swede going round too so very conscious of club root build up so not willing to chance that. Is oats off the pile and some vetch a good idea?