The hay we sell at zamzows is not weed free. I would not advise you to use it for gardening, at least not weed free gardening.
Not sure, suggest you contact them direct. I tried this once and it was a weed disaster.
The weight varies. It's around 50lbs, for the price i would call in for. Im thinking it's under $7 for straw.
You can call and ask I know some locations carry them
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