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Other Names: king-devilScientific Name: Hieracium aurantiacum L.
Plant Family: Compositae
Botanical Description: herbaceousStems: erect, 6 - 24 inches tall, covered with stiff hairs, and contain a milky juice.
Leaves: emerge from base without petioles, simple, covered with stiff hairs
Roots: fibrous with slender stolons running along ground, roots at nodes
Flowers: in composite heads about 0.75 inches wide, clustered at the top of leafless stems, composed of only conspicuous orange-red ray flowers, bloom June - September
Seeds: about 1/16 long, dark brown or black, cylindrical, elongated, covered with longitudinal ridges, with a thin tuft of hairs at least twice the length of the seed
Seedling: Seed leaves are tiny and smooth with almost no leaf stalk. Subsequent leaves are increasingly larger, emerging one by one on alternate sides. Both leaves and leaf stalks are covered with hairs. Leaf stalk is grooved. Stem is not apparent; leaves emerge from the base of the plant.
Reproduction: perennialPropagation: seeds and stolons
Dispersal:
State: Common throughout Wisconsin.National: Found on the Pacific coast, then north from Minnesota to the Atlantic coast as far south as Indiana and West Virginia.
Origin: native of Europe
Thrives in poor, noncultivated and disturbed soils. Occasionally invades new plantings and can become a pest in new upland type cranberry marshes, but may not persist in cultivated fields.
While scouting a cranberry bed for disease and insect pests, identify weed populations as they arise. Note the specie(s) of weed present as well as the population level relative to field area. Example: 10% orange hawkweed, 20% boneset and joe-pye weed mix.
Gleason, H. A. 1952. Illustrated Flora of the United States and Adjacent Canada. Vol. 3. Lancaster Press, Lancaster, Pennsylvania. p. 524.
Kummer, L. D., T. G. Dittl, and T. D. Planer. 1993. Wisconsin Cranberry Weeds. Wisconsin Cranberry Board, Wisconsin Rapids, Wisconsin. p. 7.
Lorenzi, H. J. and L. S. Jeffery. 1987. Weeds of the United States and Their Control. Van Nostrand Reinhold Company, New York, New York. p. 318.
University of Illinois at Urbana-Champaign. 1981. Weeds of the North Central States: North Central Regional Research Publication No. 281. College of Agriculture, Agricultural Experiment Station. Bulletin 772. p. 219.
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