Site icon 4-County Cooperative Weed Management Area

Human Health

A few invasive species are a human health concern.  Some impacts are subtle, such as for diffuse knapweed, which emits fumes that create asthma-like symptoms.  Some species, like pokeweed or spurge laurel, have berries that will make you sick.  And some, like giant hogweed, have a harmful sap that leads to deep, substantial sunburns that can leave scars.  Seriously.

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