Common ragweed is a noxious weed in Illinois. The Illinois Noxious Weed law mandates that each landowner controls the spread of and/or eradicates this plant from their land. This annual plant has an extensive, fibrous root system. It spreads primarily by seed. It grows in a variety of habitats such as riparian zones, disturbed areas, and woodlands. The plant is native to North America and exists all throughout the country. Common ragweed has the ability to overtake areas and limit the resources available to other plants. It is also known to aggravate conditions such as seasonal allergies and asthma.
As an alternative, Culver’s root (Veronicastrum virginicum) is a good option. There are a number of native and non-native species that could be used in place of common ragweed. More desirable species may be found using the online Search Trees and Plants page of the Arboretum website. Before purchasing or planting, be sure to check for any local or state guidelines on this species, and ensure that this plant is suitable for its habitat by checking its attributes at mortonarb.org or plants.usda.gov.
- Family (English) Aster
- Family (botanic) Asteraceae
