Chicago Nature Now! Alert
September 23, 2016
“Chicago nature info and news to help you discover the region’s finest natural wonders.”
Here’s what’s happening in Chicago nature, right now!
Changing Colors of the Prairie
Now that it’s officially autumn, the prairies are the first habitats to change color. Last week, giant sawtooth sunflowers reigned supreme across the region. This week, they have greatly faded. Many varieties of asters remain in bloom and you should be able to find them in almost any of our local prairies. Ethereal gentians are still hanging on, but they aren’t as common. Also prominent in the autumn prairie are towering waves of red-stemmed grasses. Here’s a list of prairies that are looking good:
- Illinois Beach Nature Preserve in Zion, Illinois: Visit the sand prairie using the trail to the east.
- Spears Woods in Willow Springs, Illinois: Click here for the location of the trailhead that goes west into the prairies.
- Lake in the Hills Fen: Visit to experience the fens and the grand prairie expanse of grasses and flowers, including fringed gentians.
- Chiwaukee Prairie in Pleasant Prairie, Wisconsin: This is a beautiful prairie in September.
- Somme Prairie Grove in Northbrook, Illinois: This is another place that feels like an escape.
- Kent Fuller Air Station Prairie in Glenview, Illinois: Though this is not an officially featured preserve on this website, visit now to see all three gentians in bloom—bottle, prairie, and fringed.
- Theodore Stone Preserve: There are two different prairies here, a mesic prairie on the west side of the preserve (near the main entrance) and a dolomite (limestone) prairie on the east side.
- Kickapoo Prairie in Riverdale, Illinois: This is a beautiful prairie very close to Chicago’s city limits.
- Powderhorn Prairie: This is the most biodiverse site within the city limits of Chicago.
- Bluff Spring Fen in Elgin: Visit to see the tall grasses, golden blooms, and fringed gentians.
- Middlefork Savanna in Lake Forest, Illinois: You can take a nice long walk here.
- Shoe Factory Road Prairie in Hoffman Estates, Illinois: Hike this hill prairie and the large grassland at its base.
- Wolf Road Prairie in Westchester, Illinois: This prairie offers a hundreds of species and a wonderful mix of colors and textures.
Gentians Galore
These are not flowers that fill the landscape, but they are beautiful nonetheless. Look closely for some combination of prairie, fringed, and bottle gentians at Lake in the Hills Fen, Wolf Road Prairie, Somme Prairie Grove, Powderhorn Prairie, Chiwaukee Prairie, and Belmont Prairie.
Asters Mark the End of the Blooming Season
In Ancient Greek, “aster” meant “star,” which makes sense because the blooms of the aster species resemble stars. Think of daisies, but much smaller, with colors that range from white and blue to pink and purple. Right now, many species of aster can be found in our prairies and savannas.
Hummingbirds Galore
Yes, the hummingbirds are still around. You can find them humming about at many nature centers including: Sagawau Canyon, Pilcher Park (at the nature center and south of the greenhouse), and Little Red Schoolhouse.
Ferns & Canyon Tours
In fall, ferns start turning yellow and brown. Check out these preserves where ferns are most prevalent: Cowles Bog Trail, Miller Woods, and Hoosier Prairie (all in northwestern Indiana). If you’d like to experience a lush, fern-lined canyon, call Sagawau Canyon in Lemont, Illinois to sign up for their next canyon tour.
PHOTO SECTION
Gentians Galore!

At Powderhorn Prairie in Chicago, Illinois, blue bottle gentians survive under the shadow of the dense September prairie, where plants, like this sawtooth sunflower, can tower twelve feet into the air.*

Bottle gentian (or closed gentian) is fully dependent on bumblebees for its survival. The petals of this unusual flower are effectively closed to other insects, but the strong bumblebee is able to muscle its way in through the tip. Late in the season, when fewer plants are blooming, bottle gentian relies on the slim pickings for pollination, hoping bumblebees won’t mind the extra effort.*

This is the time when the beauty of bottle gentians are at their most transcendent. When I first set eyes upon these fading blooms at Belmont Prairie, I was taken aback, struck by an arrow through my heart. Instantly, I fell in love with the prettiest flowers I had ever seen. Maybe I was just having one of those days, but I was close to tears.*

Gorgeous fringed gentians bloom in September. However, the flowers are diurnal, meaning that the the blooms only open up with the sun and are closed at night and, sometimes, on cloudy days. Unlike many prairie species that are perennials, fringed gentian is an annual.*
Asters Mark the End of the Blooming Season

New England aster is just one of the many species of aster that bloom this time of year.*
Ferns & Canyon Tours

Royal ferns in the light fog of the savanna at Hoosier Prairie in Schererville, Indiana.*

Lush ferns line the walls of Sagawau Canyon in Lemont, Illinois. But you can only see it if you sign up for their upcoming canyon tours. Register soon. They fill up quickly.*
* Photo is representational and was not recorded this year. Bloom times vary from year to year.
If you find this website of Chicago nature information useful, please consider donating or purchasing my nationally-acclaimed book that celebrates all of the preserves featured on this website.
—Mike
