Introduced species: Creeping buttercup (Ranunculus repens) Characteristics: Creeping buttercup is a low-growing, evergreen perennial that thrives in moist or poorly-drained soil. Its hairy leaves are chiefly compound, with three leaflets […]

Introduced species:  Policeman’s Helmet (Impatiens glandulifera) Characteristics:  Policeman’s helmet—also known as Indian or Himalayan balsam—is an herbaceous annual with smooth, hollow, hairless stems, ranging from 1-3 m (3-10’) tall.  The

Introduced Species:  Orange and Meadow Hawkweeds (Hieracium aurantiacum and H. pratense [also listed as H. caespitosum]) Characteristics:  Hawkweeds are low-growing plants with shallow fibrous roots and a basal rosette of

Introduced Species:  Butterfly Bush (Buddleia davidii) Characteristics:  Butterfly bush is a weedy perennial shrub that grows up to 4 meters (12 ft) tall.  The opposite, lance-shaped leaves are greyish-green on

Introduced species:  Common Teasel (Dipsacus fullonum syn. Dipsacus sylvestris) Characteristics:  Common teasel is a weedy biennial.  First-year growth is a rosette of ovoid (when younger) to oblong leaves with a