Typha angustifolia and T. x glauca
The dense rhizome mats and thick layer of leaf litter that cattails produce, exclude other plants from growing within cattail stands, making them a threat to biodiversity.
Common periwinkle is an herbaceous, perennial and evergreen groundcover. The leaves are opposite, elliptic in shape and dark green, though some varieties may have variegated coloration. It produces blue-purple flowers with 5 petals that are blunt at the tip and arranged in a spiral or “pinwheel” shape.
Dames rocket is a flowering biennial that was introduced in North America in the 1600s. During its first year, it grows as a basal rosette. In its second year, its flowering stem grows up to 4 ft. tall. Dames rocket has alternate, lance-shaped leaves with serrate margins.
Eurasian boar, also known as feral hogs or feral swine, can include domestic pigs or "pet" pigs that have been released or escaped from captivity and "gone wild", wild boar (native to Eurasia) that escaped from licensed shooting preserves, or a hybrid cross between domestic pigs and wild boar.