Parsley is widely used as a spice and garnish. Fresh parsley is the most flavorful, but you can only store it for a maximum of about 2 weeks. Freezing parsley is a common method of storing it for a longer period of 5 to 6 months. By drying parsley, you can use it for up to 1 year. A common drawback of most methods of drying parsley is that it will lose some of its flavor. However, the dried version is used much more, because it is available any time of the year and will last a long time if stored properly.