Being new to gardening (and very enthusiastic!) I have been trying out lots of different vegetable plants. A few weeks ago, I planted some asparagus seeds, perhaps a little foolishly. Some of these germinated and are now about 5 inches high with some ferny leaves. Should I leave these to grow over the winter, or cut them down as I will do with my year old plants? And will they be ok to stay in an unheated greenhouse over the winter?
Any advice would be greatly received!