Crataegus monogyna, also known as common hawthorn or single-seeded hawthorn, is a flowering tree native to Europe, northwest Africa and western Asia. It has a dense crown, thorny stems, and produces fragrant white flowers in late spring. This species is widely planted as a hedge plant and is a good firewood. It is also used for traditional herbalism and has been investigated for treating cardiac insufficiency. The fruit, called haws, are edible raw and are commonly used to make jellies, jams, syrups, and wine. The tree is associated with faerie folklore in Ireland. Notable specimens include the oldest tree in France, an ancient tree in England, and a 700-year-old tree in Norfolk. Overall, Crataegus monogyna is a versatile and valuable tree with numerous uses and cultural significance.