Invtroduced species:  Saltcedar (Tamarix ramosissima) Characteristics:  Saltcedar species are spreading, deciduous shrubs or small trees, 1.5-6 m (5-20 ft) tall, with numerous slender branches.  The bark of young trees is […]

Introduced species:  Jubata grass (Cortaderia jubata) Characteristics:  Jubata grass—also called purple or Andean pampas grass—is a very tall (up to 7 meters, or 23 feet) perennial tussock grass species.  Long,

Introduced Species:  Orange and Meadow Hawkweeds (Hieracium aurantiacum and H. pratense [also listed as H. caespitosum]) At the end of a recent walk in Forest Park, I spied a couple

Introduced species: Poison hemlock (Conium maculatum) Characteristics: The carrot family (Apiaceae) is perhaps the most wildly bifurcated plant family in terms of human use, with most of its members being

Introduced species:  Garlic Mustard (Alliaria petiolata) Characteristics:  Garlic mustard is an herbaceous “biennial” (more on that in a minute) with a deep, white taproot.  The rosettes, formed in the first