Cockleburrs? They seem to grow well in the US Midwest (at least about 40 miles west of Chicago.) We also get stick-tights which are much smaller. As for my "la

Cockleburrs? They seem to grow well in the US Midwest (at least about 40 miles west of Chicago.) We also get stick-tights which are much smaller. As for my "lawn", I mow whatever grows at the highest height I can set my mower. No fertilizer, no toxins. Whatever grows is appreciated. Except thistles, cockleburrs and stick-tights. I have a variety of grasses, American violets, clover, ajuga and lots of other stuff. I also pull portulaca and add it to my salads.