Blueberries offer significant amounts of several vital nutrients. For example, a single cup of blueberries contains approximately 36 percent of your suggested daily vitamin K, 25 percent of your suggested daily manganese, 24 percent of your suggested daily vitamin C and 14 percent of your suggested daily fiber. If you have an abundance of these flavorful berries, freeze them to keep them good for up to two years with proper care.
Sort through the blueberries, picking out any that are moldy, soft, over-ripe, broken or otherwise imperfect. Also sort out anything that is not a blueberry, such as leaves or stems. Discard these damaged berries or other items.
Rinse the berries gently under cool, running water. Place them onto a layer of paper towels, then top with more paper towels. Dry the berries very gently, being careful not to bruise or damage them. Dry them as completely as possible.
Spread the berries in a single layer over a cookie sheet. Place the cookie sheet in the freezer, being careful not to tilt it or pour the berries off.
Freeze the berries for at least an hour or until they are frozen solid. Transfer the frozen berries into resealable plastic freezer bags, remove as much air as possible, seal the bags and return the bagged berries to the freezer. Use the frozen berries within approximately a year.