Yes, old spices can be composted! If you have herbs or spices that are past their prime, don't throw them out - compost them instead! Not only is it a great way to reduce food waste, but your compost will be richer and more flavorful as a result. Here's how to do it:
Simply add your old spices to your compost bin or pile. There's no need to chop them up or anything - just toss them in. As the spices break down, they'll release their flavor and aroma into the compost, making it even more rich and nutrient-dense.
Just be sure not to add too many at once - a little goes a long way when it comes to flavoring your compost! And of course, if you're using a bin with drainage holes, be sure to put some sort of mesh over the top so your spices don't escape.