Prickly Poppy

From LoveToKnow Garden

Prickly Poppy (Argemone) - Handsome Poppy-like plants, said to be perennial, but perishing on moist soils after the first year. As they come from the warmer parts of California and Mexico, and even there grow on dry hill-sides and in warm valleys, their perishing here may be understood. Usually about 2 feet high, they have large white flower 4 inches across, with a bunch of yellow stamens in the centre. They require a warm loam, and go with the choicest annual flowers. Mostly grown are A. mexicana, A. grandiflora, and A. hispida; so much alike in habit as not to need separate description. Seed end of April in open.