Tomatoes are perennials in their native climes. You can actually set those you have back in the ground when it warms up next year and they will grow. I have gotten crops from tomato plants that were held over winter and then replanted. You can probably sucker them also although I have not tried it. George Teressa Kandianis wrote: > > I have an unheated green house (in extreme NW Washington, wet and cold) with > some tomatoes still fairly healthy though not setting fruit or ripening. > Can I root suckers of these plants and expect them to be as good as new > starts for next year? Teressa Kandianis