How to Tell if Saffron is Bad?
Saffron, like all spices, expires. Like most spices, it gradually loses its effectiveness over time. It will be at peak quality for a year or two, depending on storage conditions (less if stored improperly), and then gradually degrade until it is unfit for cooking. Because saffron is dried, it is unlikely to decay or become unpleasant or off-putting. However, it is possible if it has been exposed to a lot of moisture.
Your saffron will most likely dry out slowly and change the texture.