This map from the Arboretum’s Chicago Region Trees Initiative and Purdue University’s Digital Forestry Initiative models where shrubby invasive plants are located in the Chicago region and labels whether the lands where these plants are found are private or public.

Invasive woody plants and shrubs like bush honeysuckle and European buckthorn are a huge problem for the Chicago region. Invasive shrubs like European buckthorn can outcompete other native plants and tree saplings, preventing forest regeneration The invasive European buckthorn alone accounts for more than one-third of all trees found in the Chicago region.

Using this map, conservation efforts and removal plans can be coordinated with local landowners to help manage the spread of invasive woody plants and shrubs.

Access the interactive map.

If you’re a resident and your property is in or near one of areas highlighted in this map, consider identifying and possibly removing invasive plants on your property.

Contact CRTI for more information about how to deal with invasive woody plants.