Hi, I'm new to gardening and would like to know whether I should cover all my veg with cloches over winter as my site is quite exposed? I am worried that this might encourage too much growth as I have already cloched peas that were sown three weeks ago and they are now 4 inches high. I am using raised beds and following the square foot gardening method. Also, 4 of the broad beans that germinated came up with black tinged leaves. They are growing well but could this be due to high winds or rain? Any advice would be greatly appreciated!