Fortunately, modern agricultural methods won't allow corncockle to spread. The leaves are narrowly lanceolate, pale green. So, if you like the flower, go for it, but don't eat the seeds![1] - http://en.wikipedia.org/wiki/Common_Corncockle[2] - http://www.ansci.cornell.edu/plants/toxicagents/saponin.html[3]...