Nature benefits from real winters…

While our stewardship work has slowed to a halt this January and December, nature pushed through…. for eastern woodland forests and prairies like ours here in Rouge Park. Winter is not a useless or slow season, it’s an active and essential phase of our ecosystem’s natural cycle. Snow and cold weather protect soil life, regulate species, and  help sustain the long-term circle of life  in ways that are often invisible to casual observers.

Snow cover acts as a natural insulating blanket, protecting soils from extreme temperature swings, allowing microorganisms, fungi, and invertebrates to continue functioning just beneath the covers. This insulation preserves soil life and protects the root systems of native plants including woodland wildflowers and prairie grasses from freeze damage. In areas where snow cover is consistent, spring growth is often stronger and more diverse.​

In prairie systems, cold weather actually helps many plants to germinate as their seeds require cold for a process called “cold stratification.” ​

Winter conditions also influence hydrology. Snowmelt, matched with less drastic temperature shifts, provide a slow steady release of water into soils, streams, and floodplains, reducing erosion and supporting wetlands and riparian forests. In a watershed like the Rouge River, this gradual recharge helps stabilize stream flows, protect aquatic habitats, and reduce the severity of spring flooding. However when rapid temperature swings meet snowfall, Rouge floods rather quickly as there are so few wetlands remaining. ​

Cold temperatures also help to control some invasive pests, pathogens, and species. While native plants and insects evolved alongside cold winters and even depend on them to regulate life cycles, invasive critters like larva of the Emerald Ash Borer, spotted lantern flies, and hemlock woolly adelgid, all struggle in extremely cold winters. The invasive Kudzu plant and many species are largely restricted to the South due to freezing soil temperatures. Crappy weather can negatively impact invasive insects and plants that lack cold tolerance, reducing pressure on native species and slowing ecological imbalance.