Invasive species were introduced to the Anoka Sand Plain through human actions such as farming, irrigation, suburban development, and the importing of plants from other areas of the world. Invasive species have a negative impact on wildlife and pollinators.
Human intervention is now the only solution to return the wetlands to their native state. The removal of invasive species and implementation of restoration strategies will allow the native seedbank, wildlife, and pollinators to return.
Trees do not typically grow well in wetlands. Over time, invasive trees have taken hold and the tree removal is part of the wetland restoration process.
In addition to wetlands, the Blaine Wetland Sanctuary also has an upland forest habitat where healthy trees remain and invasive species are managed.
Restoration and Management is Key to the Success of the Many Plants and Animals
Reed Canary Grass(Phalaris arundinacea)
Reed canary grass is a densely clustered perennial that reproduces stems underground creating a thick mat of roots.
Non-native Phragmite or Common Reed(Phragmites australis)
Non-native phragmite is a very aggressive plant that can reach heights of 15 feet, crowding out native plants.
Buckthorn out competes native plants for nutrients, light, and moisture. It threatens both upland and wetland habitats.
Prescribed burns clear away invasive species revealing the dormant native seed bank and triggering growth.
Herbicides directly affect the invasive species during the growing season, while limiting impact on pollinators and native plants.
Raking and Mowing
Raking and mowing removes dense invasive species and plants. This exposes the native seedbank and allows them to grow.