Field madder (Sherardia arvensis) observed in Pullen Mill Rd, Culleoka, TN, US
iNaturalist: ahadrock1
Invasive Species
Field madder creeps through lawns and garden edges so inconspicuously that most people never learn its name — spotting and logging it on iNaturalist helps naturalists map exactly how far this Old World plant has spread across Tennessee.
Field madder is a low-growing plant originally from Europe that has quietly established itself across parts of North America. A keen observer in Culleoka, Tennessee photographed and submitted it to iNaturalist, where the community confirmed the identification to research-grade status. Observations like this help build a clearer picture of where non-native plants are spreading and how common they really are.
Key Findings
A research-grade (community-verified) observation of Field madder was recorded in Culleoka, Maury County, Tennessee.
The observation is georeferenced to Pullen Mill Rd, contributing a precise location data point to regional distribution records.
Field madder (Sherardia arvensis) is a non-native European annual in the coffee family (Rubiaceae) that has naturalized across much of North America.
chevron_right Technical Summary
A research-grade observation of Field madder (Sherardia arvensis) has been recorded in Culleoka, Tennessee — adding a confirmed, community-verified data point to the documented range of this small flowering weed in the American South.
Abstract Preview
Research-grade observation of Field madder in Pullen Mill Rd, Culleoka, TN, US.
open_in_new Read full abstractAbstract copyright held by the original publisher.
Species Mentioned
Was this useful?
Urban Tree Canopy Reduces Heat-Related Mortality by 39% in European Cities
Trees in your local park or street aren't just pretty — they are literally keeping people alive during heatwaves, and planting even a modest number of the ri...
Sherardia is a monotypic genus of flowering plants in the family Rubiaceae. The genus contains only one species, Sherardia arvensis, the (blue) field madder, which is widespread across most of Europe and northern Africa as well as southwest and central Asia and Macaronesia. It is also reportedly ...