Quote:
Originally Posted by mecktom
I always use hay and it works fine. Straw has weed seeds unless it is certified and then you still don't know for sure.
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I think that you may be confused. Hay is the entire harvested grass, including the seed heads. Hay is more commonly used as an animal feed, but is also good for compost (more nutrients than straw) so long as your pile gets hot enough to kill the seeds. Straw is simply the plant stalk that is left behind when the seed heads are removed.
To sum it up: Hay= Seeds, Straw= NO seeds