1 Lily of the Valley
Lily of the Valley is a sweetly scented, highly poisonous woodland flowering plant that is native throughout the cool temperate Northern Hemisphere in Asia, and Europe. These delicate little flowers may look innocent however; they are in fact extremely poisonous. Eating large quantities of this flower can leave you with stomach aches, nausea, vomiting and possibly seizures.
Daphne odora (winter daphne) is a species of flowering plant in the family Thymelaeaceae, native to China, later spread to Japan and Korea. This wonderful scented flower is poisonous and its berries can induce a coma or sudden death, whilst consuming any other part of the plant can cause very painful headaches and convulsions.
3 Wolf's Bane
Wolf's Bane better known as aconite, monkshood, wolf's bane, leopard's bane, mousebane, women's bane, devil's helmet, queen of poisons is one of the most poisonous flowers known to man. All parts of Wolf's Bane are poisonous, especially the roots and seeds, and the flowers if eaten.
4 English Broom
The English broom, scientific name cytisus scoparius, is a perennial leguminous shrub native to western and central Europe. This yellow flower contains toxic chemicals which can affect your heartbeat – potentially depressing the heart and nervous system – and is considered especially harmful to children, pregnant women and people with heart conditions.
5 White Snakeroot
Native to eastern and central North America, White Snakeroot, scientific name Ageratina altissima is a poisonous perennial herb in the family Asteraceae. This flower contains the toxin tremetol, which can be poisonous if consumed directly or second-hand.