Canadian thistle has invaded a large pile of aged horse bedding (mostly sawdust and straw with manure). I wanted to use this in the garden. I can pull the thistle but of course the extensive root network is still there (if you know thistle). Question is, will hot composting the bedding with grass clippings kill the thistle root? Or would spreading it out and solarizing it with clear plastic? Or do I just give up on it? Thanks.
ps I'm back on the list with a new email address -- missed the postings for a while and am catching up. Good to be back.
Bob at Red Brick Farm, Hopewell NJ