How Long Can You Store Granular Fertilizer?
You can store granular fertilizers indefinitely because they do not go bad. You can keep a big bag of your pellets in the back shed for years and never worry about it getting expired. However, proper storage is still important. Even though granular fertilizers do not have an expiration date, they can get damaged if moisture gets in your bag. You need to store your fertilizers properly to keep them usable over long periods.