Frost will damage your tender plants so here are a few tips to help protect your plants from frost:
Save your plants and flowers from frost by putting small cups over the plants. For larger plants using buckets, larger pots over the plants during the night will keep them from frost.
You can use newspapers, blankets and sheets to keep frost from killing off flowers when that first frost hits.
Take a 1.5Ltr or 2Ltr clear plastic bottle and cut off the base with a craft knife. Remove the stopper and place over a single plant! A simple but effective way of protecting tender plants from frost.