I never ceased to be amazed by nature! The yellow horned-poppy (Glaucium flavum) grows in the shingle you find on beaches, just how amazing is it that plants can not just survive but actually thrive in what appears to be a totally inhospitable environment. It is not alone, a few other plants have made shingle beaches their home.
Being a large yellow-flowered poppy you hardly likely to mistake it for any other plant but just to be certain that the sprawling, large four-petalled flower growing on a shingle beach that you have found is, indeed, the yellow horned-poppy look for the seed capsules from flowers that have gone over. In fact you probably will not need to look for them they will be obvious at once being anything from six to twelve inches long, the largest seed capsule of any British plant. This long seed capsule is, of course, how it gets its name as a horned-poppy. Related to the common field poppy you can find this flower on the various shingle beaches in Dorset but Chesil beach is its stronghold.
This is a very poisonous plant that can cause all manner of ill effects if consumed. Some chemicals, notably glaucine, are taken from it for various modern drugs but these can sometimes be accompanied by difficult side effects.Yellow Horned-Poppy: stone me