Common Corncockle (Agrostemma githago) - In the 19th Century, it was a very common weed of wheat fields across Europe. Its seeds were easily spread with the corn as its large size meant it was often difficult to separate from the corn. It has some toxicity, which is the reason why this is controlled with herbicide in today's modern agriculture. For this reason it is not good to include this in a hay meadow mix. It is fairly rare now in this country as a result of farmers adopting winter wheat, which is harvested before the corn cockle has set seed. Being a corn field annual it benefits from disturbed soil to germinate. Its long flowering season is in its favour and the scentless blooms can reach 1m in height.