Local Expert Warns Manhattan Residents About Toxic Poison Hemlock Plant

July 04, 2025 | Riley, Kansas


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Local Expert Warns Manhattan Residents About Toxic Poison Hemlock Plant
During the recent Riley County Commission meeting, a significant focus was placed on the dangers of Poison Hemlock, a toxic plant that has been spotted in local areas, including near playgrounds in Manhattan. Officials highlighted the plant's potential health risks, noting that even small amounts can lead to severe allergic reactions or be fatal if ingested, with no known antidote available.

The discussion included visual aids, showcasing photographs of the plant at different growth stages. As summer progresses, the plant is transitioning to a yellow color, making it easier to identify. Residents were urged to be vigilant, especially as the plant can grow up to six feet tall and remains toxic even in its dormant state during fall and winter.

While Poison Hemlock is indigenous to Kansas and not classified as a noxious weed, county officials mentioned that they do treat it when spraying ditches for other weeds. The plant's distinctive fern-like leaves and purplish veining make it identifiable, and residents were encouraged to familiarize themselves with its appearance to avoid potential hazards.

This discussion underscores the importance of community awareness regarding local flora that can pose health risks, particularly in residential areas where children play. The commission's proactive approach aims to keep residents informed and safe as they navigate their outdoor environments.

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