Here are some resources to help you identify weeds and invasive plants.
Carpetweed, Mollugo verticillata
Carpetweed lives up to its common name by quickly forming a flat mat over the ground. This prostrate summer annual has freely branching stems with whorls of green leaves at the widely spaced nodes. It is most common in disturbed areas – gardens, new or thin lawns, and roadsides. Find out more about this common weed in this article…
Field Pennycress, Thlaspi arvense
There are many weedy plants in the mustard family. It would be easy to overlook field pennycress early in the season, but once the distinctive seed pods develop with a bottle-brush-like appearance, and especially once they start to dry, this plant becomes much more noticeable. Learn more about this introduced weed by reading this article…
Dandelion, Taraxacum officinale
Those cheerful yellow flowers are everywhere in spring. Dandelion is a European species that has made itself at home throughout North America. A menace to gardeners and homeowners looking for a lush, green lawn, this plant can also be cultivated or foraged as food. You can find out more about this ubiquitous weed in this article…
Invasive phragmites, or common reed. is a tall, perennial grass that aggressively colonizes and forms dense stands in freshwater wetlands. Learn how to identify and control this invasive threat to Wisconsin’s wetlands in this factsheet.
Japanese Knotweed, which is native to Asia, has become an invasive plant in Wisconsin. This brochure describes the plant and gives recommendations for control.
Invasive Exotic Shrub Honeysuckles
Includes history, distribution, habitat, similar species, threats, identification and impact, of the shrub honeysuckles that are invasive in the Midwest. Photos and discussion of control strategies are also included.
Purple loosestrife (Lythrum salicaria) is a fast-spreading, tall Eurasian plant that grows primarily in wetlands and ditches, but can invade home gardens. This factsheet covers identification and control of this attractive, yet invasive, plant.
Dodders are parasitic plants that can affect a variety of plants, including vegetables, herbaceous and woody plants, and even weeds. Learn what dodders look like and what to do if you find them in this factsheet.
Identifying grasses in Wisconsin
R.C. Newman Revised: 5/11/2010 Item number: A1827 Click here to view this 12-page publication that help you identify the 30 most common grass species in Wisconsin turf. Download Article
Dame’s rocket is a Eurasian biennial belonging to the mustard family. It was introduced to North America in the 1600’s and has naturalized itself in moist, wooded areas, but can also invade open areas. Learn how to identify and control this invasive plant in this factsheet.
Garlic mustard (Alliaria petiolata) is a European woodland plant introduced to North America by early settlers for its culinary and alleged medicinal qualities. Identification and control methods are covered in this concise factsheet.