Chicago Nature Now! Alert
March 10, 2025

SEARCHING FOR SPRING
2025 Edition

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BREAKING NEWS: SPRING HAS ARRIVED IN THE CHICAGO REGION!

In Chicago, spring officially arrives when sprouts of spotted skunk cabbage push up through mud or snow. And now it’s official. Thus far, sprouts of skunk cabbage have been found at Pilcher Park Nature Center in Joliet and Black Partridge Woods in Lemont.

Here’s a past photograph of skunk cabbage from Pilcher Park Nature Center in Joliet:*

Spring has officially arrived in the Chicago region when skunk cabbage rises the frozen elements using its own heating system known as thermogenesis. Read more about this remarkable species below.*

As is my tradition, I celebrate the emergence of skunk cabbage and the rebirth of a new growing season by posting my poem and educational excerpt the “Searching for Spring” chapter of my book, “My Journey into the Wilds of Chicago: A Celebration of Chicagoland’s Startling Natural Wonders.” And maybe you and your family can make it a tradition, too. (Please watch your step and tread lightly. Skunk cabbage is very hard to see.)

And now, “Searching for Spring.”

Searching for Spring

For me, the beginning of spring does not arrive in a fanfare of color. Rather, it begins subtly. In early March, burgundy spathes of skunk cabbage, dappled with yellow stripes and spots, quietly emerge from beneath a cloak of brown decaying leaves or, by way of a rare heat-generating process called thermogenesis, melt their way to the surface through layers of late winter ice and snow. And when March arrives, snow or not, I meander my way around Black Partridge Woods in a hopeful search for spring:

Winter is waning;
I’ve made it to March.
With eyes to the ground, I search for Spring.
The temperature rises.
The snow slowly melts.
With eyes to the ground, I search for Spring.
Are you under the white
in a warmth all your own?
With eyes to the ground, I search for Spring.
Are you hiding in leaves
or still waiting to rise?
With eyes to the ground, I search for Spring.
Leafing through litter
on the brown woodland floor,
With eyes to the ground, I search for Spring.
Finally up from the mud
sprouts a burgundy curl.
With eyes to the ground, it is Spring I have found.

Thermogenesis is a rare property that is shared by only a few of Earth’s plants, one of which is skunk cabbage. Concealed deep inside this burgundy hood is a tiny “green” furnace, generating heat that can rise as much as 63°F above the ambient air temperature. This easily allows the curling spathe to melt the surrounding snow and break through the surface.*

The speckled maroon spathe of skunk cabbage blends with leaf litter on the woodland floor, making it difficult to find when it first emerges. However, the plant becomes more conspicuous as it grows larger and produces its curious, oval-shaped yellow flower head, known as a spadix. The tiny delicate protrusions you see on the spadix are the flowers.
The spadix emits a foul odor that, to a human, is reminiscent of skunk. However, to flesh flies, carrion flies, and several kinds of gnats, the spadix smells and looks more like a yummy dead animal, a trick the plant uses to lure them in for pollination. The spadix is also where the process of thermogenesis takes place. It warms the confines of the spathe, providing a cozy haven for pollinating insects while transmitting the smell of carrion far and wide.*

These tender leaves of skunk cabbage will soon develop into giants, up to two feet long and one foot wide (like those on page 60). a cabbage leaf is broken, it releases an odor reminiscent of skunk, hence the name.*

It’s springtime at Pilcher Park and sunlight shines through the enormous fanning foliage of skunk cabbage which, if broken, releases a strong scent reminiscent of skunk, though sweeter and not nearly as overpowering. If you’re someone who, like me, finds the powerful essence of skunk to be an invigorating and life-affirming experience, the skunk inside the cabbage will definitely let you down.*

* 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