Stem

  • 0.5-2 ft. tall, highly branched and bushy
Photo of white flower bush
 

Leaves

  • Alternate, finely and deeply divided, up to 2.5 inches long and sometimes hairy
Photo of mayweed chamomile infestation
 

Flower

  • Daisy-like; 0.5-1 in. diameter; yellow center with 10-15 white petals
Photo of mayweed chamomile plant with white flowers
 

Root

  • Short, thick taproot
African Mustard

Other

  • Grows best on disturbed sites; often infests roadsides, waste areas, landscaped areas and crop fields; known to occur in Carson City, Douglas, Lyon and Washoe counties
  • Annual; reproduces by seed 
  • Foliage has a foul odor when crushed; reported to irritate the skin of livestock and change the milk flavor of lactating animals
  • Also known as dog fennel
 

Control

  • Cultivation or mowing prior to seed set can be effective
  • Apply clopyralid, dicamba, metsulfuron, picloram or tribenuron to actively growing plants
Blecker, L., Creech, E., Dick, J., Gephart, S., Hefner, M., Kratsch, H., Moe, A., Schultz, B. 2021, Nevada Noxious Weed Field Guide – Mayweed chamomile, Extension, University of Nevada, Reno, Field Guide

Learn more about the author(s)

Heidi Kratsch
Heidi Kratsch
 

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