Dandelion Taraxacum Officinale

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Dandelion Taraxacum officinale DESCRIPTION: Dandelion is a hardy perennial with a thick, fleshy taproot and no stem. Leaves grow in a rosette from the crown. They are long, narrow, irregularly lobed, and lance shaped. The lobed tips are often opposite each other and pointing toward the crown. Leaves are often purple at the base and emit a milky latex when broken. The deep golden yellow flowers are borne in heads on long hollow stalks. Blossoms soon mature into spherical clusters of whitish fruits, like white puffballs, composed of parachute-like seeds. Seeds are carried by wind. Type of plant: broadleaf Life cycle: Perennial Growth habit: Bunch type Aggressiveness (1-10 scale; 7 10=most aggressive): Leaf attachment whorled Leaf color: Dark green Flower description: Deep yellow, with only one flower per seed stalk Seed description: Spherical clusters that appear as white puffballs. The seed resembles a parachute Reproduces by: Seed, rootstock U.S. states found in: Throughout the U.S. Countries found in: Mexico, South and Central America, Africa, Europe, Asia Golf course areas found in: Tees, fairways, roughs, low maintenance areas MONITORING: Begin scouting when average air temperatures reach 55 F (13 C) IPM Planning Guide 1 Dandelion Taraxacum officinale MANAGEMENT STRATEGIES: Always check labels to determine turfgrass sensitivity to herbicides. For updated management information, see North Carolina State’s “Pest control for Professional Turfgrass Managers” Follow resistance management guidelines by rotating products as outlined in Weed Science Society of America’s Herbicide Site of Action Classification List Always consult the most recent version of all product labels before use. TIMING/ TYPE PRACTICE THRESHOLD Cultural N/A Encourage healthy turf, mow regularly Biological Label signal Active ingredient (example) word Pre-emerge: most effective when Caution post-emerge Atrazine Chemical (restricted use) herbicides are Isoxaben (Gallery) Caution also part of the program Metribuzin (Sencor) Caution Simazine (Simazine) Caution 2,4-D (Barrage) Caution Caution or Warning, Dicamba (Banvel) depending on formulation Post-emerge: Caution to Danger, mecoprop (MCPP) depending on formulation Triclopyr plus clopyralid mixture Danger (Confront) IPM Planning Guide 2 .

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List of Vascular Plants Endemic to Britain, Ireland and the Channel Islands 2020
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