I'm new here so please forgive if you all discussed this last year, but how
do you know if mulch hay is safe? I'd like to get a couple bales of hay, or
better yet seed-free straw, for mulching potatoes and peppers. I've always
heard that hay is THE thing for mulching. But how do I know if the hay is
safe and doesn't have broad-leaf weed killers in it?

Kathy