07/13/2026
๐จ ๐๐ง๐ฏ๐๐ฌ๐ข๐ฏ๐ ๐๐ฉ๐๐๐ข๐๐ฌ ๐ญ๐จ ๐๐๐ญ๐๐ก ๐
๐จ๐ซ ๐จโฃ
Poison Hemlock (๐๐ฐ๐ฏ๐ช๐ถ๐ฎ ๐ฎ๐ข๐ค๐ถ๐ญ๐ข๐ต๐ถ๐ฎ) ๐ฟโฃ
โฃ
Poison hemlock is a prohibited, invasive biennial plant that invades roadsides, fields, streambanks, disturbed areas, and floodplains. โ ๏ธPoison hemlock is a ๐ก๐ข๐ ๐ก๐ฅ๐ฒ ๐ญ๐จ๐ฑ๐ข๐ flowering plant, and all parts of the plant are poisonous to humans, livestock and wildlife if ingested. Contact with the plant may also cause skin irritation in some individuals, so avoid handling it without proper protection. โฃ
โฃ
๐ฟ ๐๐จ๐ฐ ๐ญ๐จ ๐๐๐๐ง๐ญ๐ข๐๐ฒ ๐๐ก๐๐ฆ:โฃ
โ๏ธ Leaves: Finely divided, fern-like, bright green leaves that are 8-16 inches long and emit an unpleasant odor when crushedโฃ
โ๏ธ Stems: Smooth, hollow, green stems with distinctive purple blotches or streaks.โฃ
โ๏ธ Flowers: Numerous small, five-petaled white flowers in umbels 4-6 inches across; blooms from May - Augustโฃ
โ๏ธ Seeds: Ridged and flat; a single plant produces over 30,000 seedsโฃ
โฃ
๐ซ ๐๐ก๐ฒ ๐๐ก๐๐ฒโ๐ซ๐ ๐ ๐๐ซ๐จ๐๐ฅ๐๐ฆ:โฃ
โข Highly toxic to humans, pets, livestock, and wildlife.โฃ
โข Invades roadsides, fields, streambanks, disturbed areas, riparian woodlands, and floodplains.โฃ
โข Produces over 30,000 seeds per plant, allowing infestations to spread rapidly.โฃ
โข Dense populations can outcompete native vegetation and are difficult to eradicate once establishedโฃ
โฃ
๐ ๐๐ก๐๐ญ ๐๐จ๐ฎ ๐๐๐ง ๐๐จ:โฃ
โข Learn to identify poison hemlock before it sets seed.โฃ
โข ๐๐ท๐ฐ๐ช๐ฅ handling the plant without gloves and protective clothing.โฃ
โข Do not mow or trim mature plants, as this can spread seeds and expose you to plant sap.โฃ
โข Report suspected infestations and remove small populations before they become established, using appropriate safety precautions.โฃ
โฃ
๐ฑ Timberland Invasives Partnership has an identified population of poison hemlock in Langlade County that is being controlled and monitored by Langlade County Forestry staff. If you believe to have spotted poison hemlock, let us know!โฃ
๐ง [email protected]