Today’s featured plant is native to North America and has become widespread in Iowa, but is also on our state’s primary noxious weed list. By some accounts, horse nettle (Solanum carolinense) originated in the southeast U.S. and is “adventive” in much of the Midwest. Others say the plant (sometimes called Carolina horsenettle, bull nettle, or devil’s tomato) is native to the prairie that once covered most of Iowa.
Either way, you wouldn’t want to grow horse nettle deliberately. It can be aggressive, especially “in disturbed sites around developed areas,” according to Illinois Wildflowers. It’s also toxic to most mammals, including humans. So if these plants appear on your property, you may want to dig them up to avoid spread.
I took the pictures enclosed below near woodland edges in Windsor Heights, Clive, and Urbandale between late June and late August.
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