I hav'nt had experience with a poisonous weed in the hay, but I have hard about it. It was a small news item about hay that was in Florida which had, I believe, Allysum in it. It was from MI which is why it stuck in my mind.
Also, there was a case of a weed growing in a pasture which was reported in one of the horse mags. It was in Equus I believe and the common name of the weed is Tansy. it stuck in my mind because I had it growing in my garden at the time.
I think you should take Redkans advice and post on a horse forum.
Also, there was a case of a weed growing in a pasture which was reported in one of the horse mags. It was in Equus I believe and the common name of the weed is Tansy. it stuck in my mind because I had it growing in my garden at the time.
I think you should take Redkans advice and post on a horse forum.