Support FLOW through our Milkweed Mania fundraiser!

In collaboration with Riverside Native Perennials, FLOW is hosting a milkweed sale. Milkweed is great for pollinators, and the butterflies will love you for it! We would love to see more of these native plants within the Lower Olentangy Watershed. The price is $12 per pot, containing 2-3 stems of milkweed. There are a variety of species available including Sullivant’s (Prairie), Whorled, Butterfly, Swamp, and Common.

Ready to order? Visit to order online. All orders must be picked up on Sunday, September 12th from 12PM-3PM at Sawmill Wetlands Education Area (2650 Sawmill Pl. Blvd., Columbus, OH 43235). Mark your calendars! Any orders not picked up during that time frame will be donated to a local greenspace area.

Please email us with any questions!

Thank you for supporting FLOW and our Greenspace Implementation Plan!

The Dangers of Toxic Coal-Tar Driveway and Parking Lots Sealants to the Watershed

photo of Brian Will

Brian Will

Come Join FLOW as we return to our Outreach and Education Speaker Series on Tues., Sep. 14, 5:30-6:30 at Whetstone Library!  

Brian Will is an organizer of Sustainable Grandview, a grassroots, community-based citizens alliance in Grandview Heights dedicated to pursuing a cleaner and more environmentally friendly city.  He has been on the board of trustees of the Solid Waste Authority of Central Ohio (SWACO) since 2016 where he leads the Solid Waste Plan committee.  He is employed at the Ohio State Wexner Medical Center where he works in medical education and is a leader on the med center’s green team.



a freshly sealed driveway

As coal tar sealants degrade, their toxic particles are washed into the waterways and are tracked into our homes.

From a sustainability perspective, Brian’s primary interest is advocating for the protection of wildlife and natural habitat, especially native trees and plants, waterways and prairies.  To this end, he volunteers with Friends of Lower Olentangy Watershed, the Grange Audubon Center, Green Columbus, Citizens Climate Lobby, and the Sycamore Land Trust.

Brian has achieved household carbon neutrality with the help of rooftop solar panels, reducing household energy usage, diet and lifestyle changes and purchasing carbon offsets through Carbon Neutral Ohio.

In his role with Sustainable Grandview, Brian has written white papers and made presentations to the city council and mayor on various environmental topics, including the importance of tree canopies and the dangers of coal-tar driveway and parking lot sealants.  Brian will be discussing the latter, as toxic coal-tar represents a significant threat to humans as well as aquatic life in the watershed

Cleaning up Your Household’s ‘Carbon Trash’ and Becoming Carbon Neutral

OSU Wexner Medical Center’s Green Team Monthly Webinar Series presents:

Clean up Your Household’s ‘Carbon Trash’ and Become Carbon Neutral – with Daniel Poynter. 

Tuesday, Jul 20, 2021 12:00 PM Eastern Time (US and Canada)

About the speaker:

Daniel Poynter  founder @Carbon Neutral Ohio, one state chapter of a national grassroots movement
Daniel Poynter founded Carbon Neutral Indiana (CNI) in April 2020, and his non-profit organization is now expanding to other states, including Ohio ( CNI helps households measure and clean up their carbon footprints. Along the way, they’ve demonstrated a self-financing, scalable social movement that can be expanded across other states. Before founding CNI, Daniel was a software engineer, professional advisor to 100+ social entrepreneurs, MacArthur Foundation Young Innovator, and speaker at 20 international academic institutions.

Be a FLOW citizen scientist!

You can be a FLOW citizen scientist with just your smart phone and an iNaturalist account!

iNaturalist observations allow anyone to identify and share their observations of living things – animals, plants, fungi, and more.

We have added the Lower Olentangy Watershed as a “place” in iNaturalist, so any of your observations with coordinates within the watershed will automatically appear under that listing, helping us better determine the diversity of species in the watershed. It doesn’t have to be an unusual or rare species to be of interest.

You can search for Lower Olentangy Watershed or even Olentangy and see what wonders your watershed holds!

Upload your nature photo(s) to your iNaturalist account (it’s free!) and the site will offer suggestions to help you identify what you are looking at, and other users actively reach out and help confirm many of your identifications. The more detailed the photo the better, and you can add multiple photos of the same plant or animal.

Wildlife Habitat Creation for a Healthier Watershed

This is a section of a five-part series produced by FLOW to educate residents about backyard conservation.  

In the past thirty years, there has been a 90% increase in urban development in Ohio. This pattern is continuing – in the next thirty years, the Olentangy Watershed is expected to gain over 200,000 people. This rapid pace at which urban areas are growing is stressing environments and wildlife. One in four birds have been lost since 1970, Colony Collapse Disorder is taking down beehives at alarming rates, and the monarch butterfly is a candidate under the Endangered Species Act. Although the situation can look bleak, backyards and urban greenspaces act as oases to support wildlife. Cities and other urban areas can still support threatened species and migratory birds. Your very own backyard, however small, can make a big difference for wildlife. 

Not only does providing for wildlife bring joy and entertainment, it also strengthens local food webs and ecosystems. Wildlife needs four essential elements that you can provide in your very own landscape: water, food, shelter, and a place to raise young. 

Trees, shrubbery, and other plantlife are the backbone of a successful habitat. A good first step towards a thriving backyard is to remove exotic invasive plants and replace them with native species. Natives are adapted to the local environment, so generally require less maintenance and are heartier. Non-natives often do not provide good habitat or nutrition for local animals. For more information on plants indigenous to your area, consult a local nursery or this online list. Plantlife can provide food, shelter, and a place to raise young; so choosing and maintaining your plants is crucial. Try to cultivate a continuous season by choosing a variety of plants that bloom and bear fruit at different times throughout the year. Even dead plants and trees provide immense value. Dead logs or standing dead trees called “snags” can support more than 400 species. The cavities of dead plant stems provide habitat for nesting bee species. Take a look in your own backyard to see what plantlife already exists and how it might be enhanced. 

Four different types of bird feeders.

Photo by Tom Green/Creative Commons

Although natural sources of food, water, and cover can be successful on their own, supplemental feeders, shelters, and baths prove to be effective at attracting and supporting wildlife. Seeds and nuts are an important food source that you can provide for songbirds. A diversity of food and feeders helps to support birdlife. Sunflower seeds and suet are particularly popular, but for more information about feed choices, visit Elevated feeders, bird tables, and ground feeders all provide for different types of birds and should be placed near shrubs and trees. Birdhouses and boxes also encourage wildlife to nest in your yard. Different birds have different preferences about the size of the box and its entrance, its height, and which direction it faces. To determine what box will attract which birds, you can consult the US Fish and Wildlife Service’s online materials. Finally, choosing to install a birdbath or other water feature will also bring wildlife to your yard. When choosing a birdbath, choose shallow ones with rough textures or add rocks or pebbles to your bath. 

Small backyard pollinator gaHummingbirds, bees, bats, and butterflies each bring their own exceptional type of beauty and all play an important role as pollinators. To protect and provide for these species, you can plant a pollinator garden specifically suited to them. Pollinator gardens do best in sunny locations to support nectar-providing plants which should be grouped in clumps. Hummingbirds specifically like red and yellow tubular plants. Milkweed is critical to supporting some butterfly species. Try to avoid planting hybrids because they have often lost their pollen, nectar, and fragrance. Also avoid using insecticides near or in your pollinator garden. For more details on planting a pollinator garden, check out the US Forest Service’s online instructions.

Large bee hotel Supplemental feeders and shelters can help out pollinators, too. Hummingbird feeders can be filled with a solution of one part sugar to four parts water. Try to wash the feeders with soap and water every three to four days. Bees and butterflies like salt licks which can be made by mixing sea salt into puddles or mud in your yard. Solitary bees with no hives to protect (and thus no reason to sting) nest in narrow tubes. You can make bee homes or even “bee hotels” for these bees by drilling 1/8-inch to 5/16-inch holes in diameter a few inches deep in scrap lumber. For more information, check out this source. Bat boxes are another way to provide shelter for pollinators; you can learn about them here

When we attract birds and butterflies, we also attract other types of unwanted wildlife such as mammals. To avoid conflict with animals, secure garbage cans, avoid leaving out food, and check your house for places that would allow access to rodents. Be aware that these species can carry disease and should not be handled. Consult a pest or wildlife management company for more information or assistance. 

We all have backyards, whether they are acres or a few flower pots, and we can all make a difference for our wildlife. For more information on creating wildlife habitat and backyard conservation, you can consult FLOW’s website, the Ohio Division of Wildlife, or Ohio State University’s online resources. There is magic in your backyard, you just have to look for it. 




Reducing Pollution for a Healthier Watershed

This is a section of a five-part series produced by FLOW to educate residents about backyard conservation.  

When you imagine water pollution, what do you see? Factories pumping out sludge into rivers? A plastic island? Giant fishing boats throwing their nets overboard? When we think about pollution, we often think about point source pollution, that is, pollution from a single source like a pipe or smokestack from a single mill or factory. We can try to combat this pollution with our consumer choices, how we vote, and by supporting organizations that take polluters head-on. However, the type of pollution we often forget about is non-point source pollution, which can be reduced simply by our everyday actions. Non-point pollution is more discrete: it is the accumulation of everyday people’s little bits of excess fertilizer or leaks in their cars picked up by stormwater runoff and taken to our waterways. Still, it adds up to be a lot. 

Imagine pollution again, but this time picture pollution in your community, in your backyard, and what you can do to make a difference. By reducing the quantity of pollutants used in your home, yard, and garage, you can improve the quality of our waterways. 

Safer Choice Eco Label


To start, hazards and toxins make their way from your home to your rivers and tributaries. To avoid such pollutants altogether, you can look for non-toxic labels in the store or the EPA’s safer choice eco-label. To prevent pollutants from being picked up by runoff, store paints, pesticides, and other chemicals in waterproof containers and on a shelf off the ground. To dispose of hazardous wastes, be sure to do so properly and safely. For paints, they can be combined with kitty litter, sawdust, or another hardener and thrown out in the garbage if latex-based. Oil-based paints need to be taken to a disposal center. Knowing what to do with each item can be difficult. To find drop-off sites for waste and more information in central Ohio, check the Solid Waste Authority of Central Ohio or SWACO’s website. There are also less obvious pollutants in your home. For instance, salt-based water softeners can release chloride that pollutes our water. By keeping a watchful and discerning eye around the house, you can identify and reduce pollutants in your home. 



Rose Royce’s 1976 song “Car Wash” has many things going for it: a funky groove, peak spots on the Billboard Top 100, and even some good eco-friendly advice. Cars and car care doesn’t just create air pollution, they also have an effect on our waterways. Just as Royce sings about the possibility and magic of car washes, washing your car at a commercial car wash rather than at home is often safer for the environment and can save water. The phosphates in soaps runoff from our driveways. Plus, commercial car washes use up to 60% less water. To safely wash your car at home, do it on gravel or in your yard, empty the dirty water into sinks or toilets, and use biodegradable, phosphate-free, water-based cleaners only. Beyond washing your car, clean up or stop leaks and have a drip pan handy if you notice a leak. Don’t spill gasoline when filling up your tank or other yard machines. Finally, to manage your driveway and walks, sweep rather than spray and try to limit the use of salts. Taking good care of your car can also take care of the environment. 

Leaves in storm drain. On average, each person produces nearly 200 pounds of yard waste annually. How we manage that waste has a big environmental impact. Grass clippings, leaves, twigs, trimmings, and the like can end up in our waterways where they release nutrients like phosphorus and nitrogen that cause harmful algal blooms and oxygen shortages. Simply put, yard waste in our storm sewers is bad news. To properly manage yard waste, try your hand at composting or try out some other tips. Rather than disposing of grass clippings, consider “grasscycling,” leaving clippings on your yard and thus fertilizing your grass. Leaflitter provides habitat for lightning bugs and other helpful insects, so maybe limit your raking and leave your leaves alone. Be sure to sweep clippings off paved surfaces like sidewalks back onto your lawn. If not using or composting your yard waste, be sure to check with your local officials to learn about waste collection in our community. In Columbus, consult the city’s website or call (614) 645-3111.   

Based on your specific lifestyle, there are other practices you can adopt to be a better steward of your waterways. If you have pets, be sure to bury, wrap and throw away, or flush their waste as it contains bacteria that is harmful to waterways. If you have a swimming pool, try to drain it to a sanitary sewer system and research best practices. 

Pollution doesn’t just result from mismanagement by big companies, it also results from all of our choices. For more information on how to reduce your pollution and on backyard conservation, you can consult FLOW’s website, online information from the EPA, or guides from the USDA. Your watershed thanks you!