Thanks Nick...Been doing a bit of reading for myself..aparrently the so-called F1 clubroot resistant cabbage is a cabbage / Kale cross! I have four species of Kale growing on my allotment and they all appear to be free of clubroot. a All i've got to do now is get my rabbits taill out and cross polinate with a semi-resistant cabbage This is all said tounge in cheek (take note sfs) but if it worked for Cox's Orange Pippin ( a chance seedling) why not for me?