GLADWIN The Central Michigan Cooperative Invasive Species Management Areas (CM-CISMA), in partnership with the City of Gladwin and the Gladwin Conservation District, is very excited to announce that their restoration project at Gladwin City Park is set to begin on Monday, January 22. The park has been overrun by an invasive plant species called oriental bittersweet, which has resulted in a number of dead, hazardous trees that are now top-heavy from the bittersweet growing on them.