It's usually best to purchase fresh produce when it's in season since you will be getting a better, fresher purchase. However, that isn't always possible. Asparagus is in season during the spring, but you can find imported asparagus year-round. Perhaps you want to make a favorite asparagus side dish in the winter, in which case imported asparagus will work. But, for the freshest results, treat yourself to some fresh seasonal asparagus from a farmers' market - you'll love it!