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Conium maculatum, known as hemlock (British English), [2] or poison hemlock (American English) [3] is a highly poisonous flowering plant in the carrot family Apiaceae, native to Europe and North Africa. It is herbaceous without woody parts and has a biennial lifecycle.
Poison hemlock (Conium maculatum L.) is commonly known as deadly hemlock, poison parsley, poison stinkweed, spotted parsley, carrot fern, or snake-weed (Bryson and DeFelice 2009; Mitich 1998; USDA 2016). Native to Eurasia and northern Africa, this herbaceous broadleaf was introduced to the United States as an ornamental garden plant (Mitich 1998;
Identification Tips. Tall biennial, reaching 8 to 10 feet the second year. Bright green, fernlike leaves with strong musty smell. First year plants form low clumps of lacy leaves with reddish or spotted stems. Second year stems are stout, hollow, hairless, ribbed, with reddish or purple spotting/streaking.
22 cze 2024 · Apply according to label directions. Glyphosate products should be applied as spot treatments only! NOTE: Some ingredients listed here are only available in combination. Read the label carefully on combination products to make sure the product is suitable for your specific situation.
Herbicide products containing active ingredients glyphosate, or 2,4-D (or MCPA) are effective treatments for poison hemlock when label directions are followed. The site where the poison hemlock is growing will affect the herbicide product choice.
14 gru 2022 · Poison Hemlock (Conium maculatum, Fig. 1), is a member of the plant family Apiaceae, which contains a few important crops such as carrots, celery, and parsnips. This weed is a tall, invasive, and highly poisonous weed that is sometimes mistaken for one of its crop relatives.
IDENTIFICATION. Poison hemlock's growth form changes during its development, which usually spans two years. Seedlings are distinctive. The very first leaves to emerge (seed leaves, or cotyledons) are simple, tapered at the base, elliptical, rounded at the tip, and have a prominently veined undersurface.
