Using native aquatic plants like those in Jens Jensen Park is about more than just creating striking water gardens, though. Growing native species also helps curb the spread of invasive aquatic plants that outcompete native species and upset food webs. Invasive species common in water gardens are already threatening the health of Illinois waterways. For example, the fast-growing Brazilian Elodea—typically sold in aquarium stores and water nurseries under the name “Anacharis”—has been found in several lakes and ponds in Illinois, including in a community not far from Highland Park. Like many invasive plants, this waterweed grows in dense mats that block out sunlight needed by other species and hinders water recreation. And it is nearly impossible to remove once it has been introduced.
Category:
Jens Jensen Park water garden goes native
August 27th, 2013 by Irene MilesIISG asks water gardeners’ help in preventing the spread of invasive species
July 12th, 2013 by Irene MilesThe overall message he shared with the attendees was that even common plants associated with water gardens can quickly become “aquatic invaders” under the right conditions. Aquatic invaders are plants and animals that cause ecologic and economic harm once established in public waterways, and removing them can be very expensive and often impossible. One way that aquatic invaders are introduced or spread into public waters is through the intentional or unintentional release of species from water gardens and koi ponds.
More than just fish on the list of aquatic invasive species to watch out for
June 25th, 2013 by Irene MilesAquatic invaders come in a number of shapes, sizes, and varieties, and aren’t limited to mussels or fish. In addition to our “Be A Hero – Transport Zero” campaign asking boaters and water users to be on the lookout for invasive species, IISG has helped fund “Hydrilla Hunt!,” a program to keep this invasive plant from overtaking Illinois’ waters.

“Recognized as one of the world’s worst weeds, hydrilla can grow an inch per day and form dense mats of vegetation at the water surface. Within the past few years, hydrilla has been discovered in Wisconsin and Indiana and it is expected to arrive in Illinois very soon. Our desirable native aquatic plants, sport fishing, native wildlife, waterfront property values, and recreational uses might all be seriously impacted.‘Early detection of hydrilla could save Illinois millions of dollars in control costs,’ noted Cathy McGlynn, coordinator for the Northeast Illinois Invasive Plant Partnership (NIIPP). ‘Experience from other states shows that once a waterway becomes infested with hydrilla, it’s nearly impossible to control. Our hope in Illinois is to identify the plant at a very early stage when populations are still small enough to eradicate and manage,’ added McGlynn.”
Find out more about the program and hydrilla as an invasive species by visiting the “Hydrilla Hunt!” website.
*Photo courtesy of the Indiana Cooperative Agricultural Pest Survey Program
AIS Outreach Team highlighted in NOAA Spotlight article
May 10th, 2013 by Irene MilesIllinois-Indiana Sea Grant’s Aquatic Invasive Species (AIS) outreach team was recognized along with many other collaborators in a NOAA Spotlight article for their work on the Great Lakes Risk Assessment Tools. This tool estimates the potential invasiveness of species being sold for use in trade and hobbies such as aquaculture, live bait, and water gardens etc. It provides insights for resources managers that may guide future policies with the goal of preventing the spread of invasive species. This is also a tool that hobbyists and people working in the trades can use proactively use to help choose less threatening species. IISG “will be talking with retailers, hobbyists, and water gardeners – going to shows and posting information in stores – about how they can use the risks assessments as a guide to get ahead of regulations and make responsible decisions now,” said Pat Charlebois, IISG AIS Coordinator.
IISG AIS coordinator receives Lake Guardian award
April 18th, 2013 by Irene MilesThe Lake Guardian award, given annually, acknowledges each winner’s career-long efforts to ensure healthy lakes throughout the state of Illinois, and this year Illinois-Indiana Sea Grant’s Pat Charlebois was selected from among several nominees.
In the news: Michigan Tech researchers map aquatic invasive plants around the Great Lakes
January 24th, 2013 by Irene MilesPhragmites Australis, also know as the Common Reed, is a wetland plant that is not native to the Great Lakes. The invasive plant grows and spreads rapidly in the wetlands around the Lakes, and as a result can crowd out native plants that are beneficial to the local ecosystems.
Researchers at Michigan Tech are working on mapping the spread of the plant, though, in an effort to better understand its spread and plan for managing and reducing it.
From Upper Peninsula’s Second Wave:
“The common reed, or phragmites australis, isn’t native to the Great Lakes, but grows quickly in our climate conditions into large, tall stands that can threaten wetlands habitat.
The plant hasn’t been studied very much, or mapped, which was the goal of the Tech scientists, in cooperation with the U.S. Geological Survey, Boston College and the U.S. Fish and Wildlife Service. Together, teams first mapped the U.S. coastlines of all five Great Lakes using satellites.
Then, they did field studies along the coastlines to confirm the satellite findings, and plot the locations of large stands of the reed, in a first-of-its-kind map.”
Read more about the map at the link above and in the article at Science Daily.
Recent News
- Relaunched website provides resources for proper medicine disposal
- Meet our Grad Student Scholars: Lena Azimi
- Spring brings a program review as well as education and outreach opportunities
- Public comments sought for Illinois-Indiana Sea Grant review
- Illinois Indiana Sea Grant announces new coastal ecosystem and community resilience specialist
IISG Instagram
Out with the old. A newly updated UnwantedMeds.org is here to make safe disposal of old medications easier than ever.
Read more at the link in bio.

We are excited to offer the opportunity to propose a speaker or panel session during the 2026 Emerging Contaminants in the Environment Conference April 28-29. The conference will feature traditional 15-minute presentations and a poster session on the latest in emerging contaminant research, policies, and outreach in the soil, water, and air.
The deadline to propose a session is June 16, 2025.
Learn more at the link in bio.

What Wild Things Will You Find in Your Watershed? Join us from April 22 to May 19 on iNaturalist for the Great Lakes BioBlitz! Participate in weekly challenges, view others` observations, and build community across the basin.
How to Participate:
-Register: Sign up on iNaturalist.
-Observe: Explore your watershed and document the wildlife you find.
-Engage: Share your observations and connect with fellow nature enthusiasts.

Join the Invasive Crayfish Collaborative for an exciting webinar featuring Purdue University master`s student Izzy Paulsen. Izzy will share her mixed method study exploring how and why teachers use live crayfish and their interest in outreach. Her study draws from interview and survey data conducted in Great Lakes states.
Register at the link in bio.

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