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Pest Information



  • Latin Name: Chenopodium Ambrosioides
  • Common Name: Mexicantea
  • Other Names: Jerusalem tea, Spanish tea, strong-scented pigweed, wormseed

Pest Details



Native to Tropical America, now widely distributed in the United States.


Annual broadleaf or short-lived perennial. Can be found in most sites, including cultivated crops and orchards, roadsides and waste areas, and ditchbanks. Seeds germinate from early spring into early summer, and plants mature from late spring into the fall.


Mature plant grows over 4 feet tall and is very bushy, with extensive branching. Lower branches may grow close to the ground and then turn up at the tips. Stems are covered with short hairs and have a ridge along them. Leaves are dark green, alternate on the stalks, and have short stems. They also have glands that exude a sticky fluid with a very strong odor. Leaves may be up to 4 inches long, are oval or lance-shaped, and have deeply toothed or notched edges. Flowers are small and green, and do not show much at all. They grow in clusters on small, compact heads on short spikes.

Characteristicts Important to Control:

In mild climates Mexicantea may continue its growth over several years.

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