Join University of Illinois Extension Natural Resource, Environment and Energy Educator Jay Solomon for a Fall Invasive and Nuisance Plants program. Jay will delve into what makes some plants invasive or a nuisance and why fall is the best time to manage them.  The program will be held from 6:30 to 8 p.m. on Thursday, September 21 at the Jo Daviess County Extension Office, 204 Vine St. Elizabeth, IL 61028. There is no fee to attend the program, but pre-registration is requested by September 19. To register or for more information visit us online at go.illinois.edu/jsw or call us at 815-858-2273.

Fall can be a good time to address some invasive plant issues in your landscape. It is the best time to manage woody plants and some other perennials. You may have been noticing that some plant types seem to be overtaking your landscape. This could be the time to exercise some control to get ahead for next year, whether it be as part of fall cleanup of flower beds or a more deliberate removal of undesirable plants.

Why right now?  “Most woody and many perennials tend to be putting nutrient reserves back into the roots to help jump start next year’s growth”, Solomon continues.  “Disrupting this process by removing the above ground portion and/or selectively using herbicides can dramatically reduce the population next year.  Also, woody invasive plants tend to be the last to go dormant in the winter. Leaving the green plants in an otherwise dormant landscape, easy to locate.”   Mechanical (cutting or pulling), chemical control, and combinations of methods will be discussed.

“It is helpful to understand the difference between invasive and nuisance plant classifications,” Solomon points out.  “Invasive plants by definition are non-native, introduced by humans and do/can cause environmental or economic harm.  Nuisance plants are defined as causing management issues or other damage.  Many native plants can become a nuisance in disturbed soils of landscapes and other areas.”

The workshop will delve into how to identify the differences and management methods.  Fall is an excellent time to identify and work on controlling many of these plants in our landscapes, timber, and prairie areas.  Woody invasive plants such as autumn olive, buckthorn, bush honeysuckle, and multiflora rose are easier to identify and manage this time of year.

Why should we be concerned about invasive plants? “These plants are classified as invasive species because they are not native to the area and have distributive growth habits. They establish easily and displace native plants in our landscape without providing the same benefits to nature,” comments Solomon. “For example, bush honeysuckle can take over the understory of a forest area. Preventing tree seedlings from establishing, reducing safe and suitable nesting locations for song birds, and the berries provide a lower nutrition level for these birds. There are no winners except the bush honeysuckle.”

What about nuisance plants?  “The wet spring followed by dry summer has opened the door for some plants to become a noticeable nuisance.  Some ground covers, creeping vines, mulberry, Pokeweed, and hemlock have grown well this year.  We will discuss concerns and management ideas for these. 

The workshop is intended to help those with a home landscape or small acreage get started.