There are lots of pond plants that can survive through the winter. The plants that don't die off and are able to return to full bloom in the spring are known as winter hardy plants. Which plants are hardy in your pond will depend on your particular region and its climate. The US is split into 13 different hardiness zones depending on the hottest and coldest that the particular location can become in the peak of summer/winter. It's a great benefit to keep greenery around your pond as long as possible, as this improves filtration and aerates your pond during the winter when it needs it the most. Decaying organic matter releases harmful gases into the water that can hurt its quality and harm any fish in the water, so be sure to remove any dying plants before the detritus settles into the water.
Some examples of winter hardy plants include hardy water lillies, american water lotuses, water hyacinth, and other choices. Which plants are hardy in your zone will depend entirely on where you live and how cold winters are in your area. Evergreen aquatic plants include kinds of reeds and other tough-skinned plants which can retain heat and moisture for longer periods of time.
