I planted tubers in pots about a month ago which have been kept in the greenhouse. I've read different theories about not watering at all and others which say keep them moist. I have one very tiny green bit on one which doesn't seem to be getting any bigger and the other two have absolutely nothing. Should I take them out the pot to see if there's any sign of growth at the bottom and if so what should I see? and water or not water? I also have one in a large container which I kept in the greenhouse over winter. No sign of life there either. Any help greatly appreciated thanks.