I'm digging up this old thread, wondering what Permies have tried and learned over the past five years. Suggestions for removing goathead so far are:
Harvesting for medicinal use (although I can't find specifics of what parts of the plant to use, how to use it, or why).Pull it (but do you leave the taproot?).Plant thyme or mint or sage as a competitor.Obtain or attract puncture vine weevils.Roundup??? I don't think so.
I wondering how a sheet mulch would work. I'm also wondering how harmful it is (other than the seeds that hurt when you step on them barefoot) to just leave it be while improving the soil.
What's worked for you? What hasn't?