Unloved but Essential: Embracing Unpopular Plants for Biodiversity
From the shaded understory of Wisconsin’s mesic forests emerges Laportea canadensis, or wood nettle—a plant more likely to provoke a sting than admiration. Yet beneath its defensive hairs lies a species that plays an important role in healthy forest systems: shaping microhabitats, supporting invertebrate life, and helping maintain soil stability in moisture‑rich environments.
In landscaping, a plant’s value is often measured by showiness or ease of control. But native species like wood nettle—frequently dismissed as weeds—provide functional ecological services that ornamental plants rarely match. Their presence contributes to layered forest structure, supports specialist insects, and helps buffer ecosystems against disturbance.
Wood nettle thrives in moist, nutrient‑rich soils of floodplains, stream terraces, and low hardwood stands across Wisconsin. It typically reaches two to four feet in height, with broad, alternate leaves up to six inches long. The serrated margins and stinging trichomes deter herbivory, while its separate male and female flowers—small, greenish, and wind‑pollinated—allow the plant to reproduce efficiently in shaded conditions. Dense colonies help slow surface runoff, modestly reduce erosion, and create cool, humid microclimates used by ground beetles, spiders, amphibians, and the larvae of several native moths.
Plants like this are easy to overlook—too plain, too wild, too defensive for garden culture. But wood nettle illustrates a larger ecological truth: biodiversity depends on functional diversity, not just floral charisma. Understory species that seem unremarkable to us often support entire guilds of organisms that more celebrated plants cannot.
Rethinking our private landscapes—through approaches such as meadow‑scaping or simply reducing the dominance of turf—allows us to welcome complexity back into the places we steward. Incorporating native species, including the less glamorous ones, transforms simplified yards into living habitat. And while wood nettle itself is best left to the moist forest soils where it belongs, learning to value plants like it helps shift our attention from aesthetics alone to the ecological work that sustains the land.
Sources:
USDA PLANTS Database — Laportea canadensis (wood nettle) species profile
UW–Madison Division of Extension — Native woodland understory plants of Wisconsin
Minnesota Wildflowers — Laportea canadensis (Wood Nettle)
Illinois Wildflowers — Wood Nettle (Laportea canadensis)
Michigan Flora / University of Michigan — Laportea canadensis account
NatureServe Explorer — Laportea canadensis conservation status and ecology
US Forest Service — Forest understory ecology and plant functional roles
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