He just stopped mowing his lawn, and after a few years, he had some grad students come, and they did sort of a bio-blitz of his backyard, and they found 375 plant species, including two endangered species.
Han slutade klippa gräsmattan, och efter några år tog han dit några forskarstudenter, de gjorde en snabb inventering av hans trädgård och hittade 375 växtarter, varav två var utrotningshotade.