Want to help wildlife make it through the cold winter? Don't do a thing! Leave your garden beds and container gardens full of dead stalks, leaves and flower seed heads. This will be vital food and protection for wildlife. Large flowers like black-eyed Susans, purple coneflowers, sunflowers, marigolds, phlox and zinnias should also be left alone. When they poke up through the white snow, it'll be vital food to help birds and furry creatures. Come spring, it's fine to clip them and start a fresh planting in your garden.