Prickly Poppy, Stachelmohn, Argémone. An amazing annual for white borders. The 10 cm / 4 in. large pure white satin flowers with dark red stamens carrying golden anthers, invites you for a closer look. But beware; every medal has two sides. The drawback of this one is the large number of spines on the leaves. Bees love the large single flowers, in dozens they crawl in open flowers.