Mexican fireweed

Caryophyllales > Chenopodiaceae > Bassia scoparia (L.) A.J. Scott
Synonym(s): kochia, mock cypress, mirabel, burningbush

Mexican fireweed is an annual weed that grows to 4 ft. (1.2 m) tall. Leaves are gray-green, alternate, entire, 0.25 - 2.5 in. (5-60 mm) long, up to 0.5 in. (10 mm) wide and usually covered with small hairs. The upper leaves are sometimes glabrous. Flowering occurs in July to October. Flowers are apetaloid, sessile, inconspicuous and occur along spikes. The fruits are utricles that contain one flattened, 0.1 in. (2 mm) wide seed. Mexican fireweed is a native of Eurasia and occurs along roadsides, fields, and other disturbed places. In the winter, when the plants senesce, the plant breaks off at the base and tumbles in the wind, effectively spreading its seeds.


Identification, Biology, Control and Management Resources

  • Weeds of the Week - USDA Forest Service, Northeastern Area, Forest Health Protection

Selected Images from Invasive.org

Click on each thumbnail to download the image at 1536x1024 resolution or below for available resolutions.
Use 768x512 for Microsoft PowerPoint and use 1536x1024 for Prints and Publications.

Stem(s);
Douglas Barbe, California Department of Food and Agriculture, Bugwood.org
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Flower(s);
Jan Samanek, State Phytosanitary Administration, Bugwood.org
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Flower(s);
Jan Samanek, State Phytosanitary Administration, Bugwood.org
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Flower(s);
Jan Samanek, State Phytosanitary Administration, Bugwood.org
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Plant(s);
John M. Randall, The Nature Conservancy, Bugwood.org
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Plant(s);
Jan Samanek, State Phytosanitary Administration, Bugwood.org
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Seed(s);
Steve Hurst, USDA NRCS PLANTS Database, Bugwood.org
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Diagram or Graphic; USDA NRCS. Wetland flora: Field office illustrated guide to plant species. USDA Natural Resources Conservation Service.
USDA PLANTS Database, USDA NRCS PLANTS Database, Bugwood.org
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Diagram or Graphic; Britton, N.L., and A. Brown. 1913. Illustrated flora of the northern states and Canada. Vol. 2: 16.
USDA PLANTS Database, USDA NRCS PLANTS Database, Bugwood.org
768x512 / 1536x1024

Invasive Reference(s):

Check Invasive.org for most current lists.
  • California - Invasive Plant Inventory
  • Connecticut - Noxious Weed Law
  • Oregon - Noxious Weed Law
  • Rhode Island - Noxious Weed Law
  • Washington - Noxious Weed Law
  • Invasive Plants: Western North America
  • Invasive Plants: Guide to Identification and the Impacts and Control of Common North American Species
  • Invasive Plants of the Upper Midwest
  • Invasive Plant Atlas of New England


External Links


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