Thanks for the info Lardman... as for rootstock, I've got no idea, there's nothing on the labels and from what I've read this morning it appears Lidl don't seem to know either. I'd prefer to keep them in pots as dwarf trees at the top of the garden which is South facing, it gets full sun for most of the day. Some articles say to pot on into 18-20" pots, but should that be done now, or leave them until the winter? It does say maximum height is up to 1.5m if that helps lol