The best time to storm proof your greenhouse is Autumn or as soon as your growing year is over. Don't wait until the first storm arrives, by then it could be too late. There are a number of ways to do this and in this video I show you some of my ideas including so easy 'ground anchors' to prevent any chance of 'lift off'. Ten things you must do if you have a polycarbonate greenhouse:    • Ten things you must do if you get a p...