Are you using your polytunnel, also known as high tunnel or hoop house, to its full potential? If so you'll be harvesting fresh crops all year round - sweet potatoes and late celery in November; winter radish, baby carrots and celeriac in early February; salads leaves right through the winter. Even in the 'hungry gap' you'll have a choice of new potatoes, pak choi, peas, tender cabbages, beetroot and more. How to Grow Food in Your...