Scientific Name:
Argemone mexicana
Toxic Parts:
all parts, especially the seeds
isoquinoline alkaloids
Flower Color:
roadsides, riverbanks, cultivated lands, disturbed areas, ornamental, floodplains

Geographical Distribution

Ground mexican poppy  distribution - United States

Ground Mexican Poppy

Argemone mexicana

Mexican poppy, Mexican prickly poppy, Satyanashi , Flowering thistle, cardo, cardosanto
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Ground mexican poppy (Argemone mexicana) is an invasive, annual weed which is found worldwide. The plant is known for it's prickly stems and yellow to pal orange flowers. The stem is erect, branched, usually prickly, pale bluish-green and exudes an unpleasant-smelling yellow sap when cut.

Toxic components
All parts of A. mexicana are toxic if consumed by poultry. The plant contains isoquinoline alkaloids, dehydrocorydalmine, jatrorrhizine, columbamine, and oxyberberine. The seeds contain 22-36% argemone oil which contains the toxic alkaloids sanguinarine and dihydrosanguinarine.