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Argemone

Prickly Poppy
Papaveraceae
Annuals

Native to central and North America. Prickly-leafed and prickly-stemmed plants to 3 ft. tall and 1 1/2 ft. wide, with large, showy poppies that bloom mainly in summer. Easy to grow from seeds sown in place or in containers (transplant gently). Will reseed and colonize. Provide good drainage. Seed specialists may offer other species.

Argemone mexicana (photo courtesy of Denver Botanic Gardens)
Argemone mexicana (photo courtesy of Denver Botanic Gardens)

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Argemone mexicana

Annual, native to the West Indies and probably Central America and Florida; naturalized in the Southwest and Hawaii. Yellow to orange, 1 1/2–2 1/2-in. flowers. ‘Yellow Lustre’ grows to 1 1/2–2 ft. tall, has lemony orange blooms and blue-green leaves veined in silver.

Argemone polyanthemos (photo courtesy of Charles Mann)
Argemone polyanthemos (photo courtesy of Charles Mann)

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Argemone polyanthemos

Annual or biennial. Western native with white, 2 1/2–4-in. flowers.

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