A tall biennial that produces a single purple flowerhead atop its stem. Leaves, stem and bracts are all covered in hairs or spines which makes it unpalatable to wildlife and livestock.
English ivy is an evergreen perennial vine that can grow to reach lengths of 90 feet with proper support or form a dense, trailing mat.
Oak wilt is caused by a fungus that blocks nutrient and water flow through oak trees, killing them from the top down.
Black jetbead is a deciduous shrub that can grow up to 5 feet tall. It has bright green leaves that are opposite and doubly serrate with a rough leaf surface. It forms a dense shrub layer that shades out native species.
Himalayan balsam is an annual herb that produces irregularly shaped, pink to purple colored flowers. It thrives in lowlands, riparian zones, wetlands and disturbed areas.