Winter vegetable seeds are a cost-effective way to grow fresh and healthy food during the coldest months and throughout the hungry gap. With a little planning ahead, these hardy vegetable seeds will be ready to fill gaps as your summer crops come to an end. Hardy varieties like cabbages, parsnips, kale and onions can all be planted out in the autumn. If you're not sure when to sow your seeds, take a look at our monthly sowing and growing calendar to keep ahead of the curve.