A healthy upland habitat with diverse native plant species provide better wildlife habitat.
Many upland areas in the Tualatin Watershed have been overrun with invasive plants. The most common non-native invasive plants are Himalayan blackberry, English ivy, and reed canary grass. These often create areas with a mono culture that do not support native wildlife.
Common methods of reducing non-native invasive species are mechanical cutting or chemical spraying followed by native plantings.