orange daylily

Liliales > Liliaceae > Hemerocallis fulva (L.) L.
Synonym(s): tawny daylily, common daylily

Orange daylily is a popular ornamental that has escaped to invade natural and disturbed areas throughout the United States. Plants are 2-4 ft. (0.6-1.2 m) tall with round stems. Leaves are grass-like, bright-green, 1-3 ft. (0.3-1 m) long and curve toward the ground. Flowers develop in the summer and are large, showy, and orange in color. Flowers occur in clusters of 5-9 at the apex of the stalk. Flowers in a cluster open one at a time and only for one day each. Flowers may have spots or stripes. Many cultivars of daylily now exist in a wide variety of sizes and flower colors. Orange daylily infestations often occur adjacent to plantings or at old homesites. Areas invaded include meadows, forests, floodplains, ditches, and forest edges. Once established, the thick tubers make control difficult. Orange daylily is native to Europe and was introduced into the United States in the late 19th century as an ornamental.


Identification, Biology, Control and Management Resources


Selected Images from Invasive.org

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Feature(s); Stamens close-up
Dan Tenaglia, Missouriplants.com, Bugwood.org
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Flower(s);
Dan Tenaglia, Missouriplants.com, Bugwood.org
768x512

Plant(s);
Britt Slattery, U.S. Fish and Wildlife Service, Bugwood.org
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Fruit(s); fruits and seeds
Ken Chamberlain, The Ohio State University, Bugwood.org
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Root(s); roots, tubers, and rhizomes
Ohio State Weed Lab Archive, Ohio State University, Bugwood.org
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Seed(s);
Ken Chamberlain, The Ohio State University, Bugwood.org
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Feature(s); base of plant
John Cardina, Ohio State University, Bugwood.org
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Flower(s);
Ohio State Weed Lab Archive, Ohio State University, Bugwood.org
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Plant(s);
Ohio State Weed Lab Archive, Ohio State University, Bugwood.org
768x512 / 1536x1024

Invasive Reference(s):

Check Invasive.org for most current lists.
  • Georgia - EPPC list
  • Kentucky - EPPC List
  • Mid-Atlantic - EPPC List
  • Invasive Plants: Guide to Identification and the Impacts and Control of Common North American Species
  • Invasive Plants of the Upper Midwest


External Links


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USDA Forest Service Bugwood University of Georgia