Joanna visits with Kevin Lyons, Monroe County Extension Agent for Ag & Natural Resources, to discuss Poison Hemlock Control.
A native of Europe, poison hemlock was introduced to North America as a garden/ornamental plant. It has a biennial growth pattern, being a low-lying rosette the first year and bolting to 3-10 feet tall the second year. The flowers are small, white, and found in umbrella-shaped clusters in early summer. It is often confused with wild carrot (Queen Anne's Lace). Poison hemlock contains highly poisonous alkaloid compounds that can be fatal to humans and livestock. Poison hemlock is typically found along roads, streams, trails, ditches, forest edges and waste areas. Poison hemlock seed is often inadvertently spread by mowing, road maintenance, or agricultural equipment. The most effective control may be mowing to prevent seed production, followed with herbicide applications to rosettes and regrowth.
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Warren County Cooperative Extension Service
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warrencountyagriculture.com
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