Blackthorn, scientifically known as Prunus spinosa, is a deciduous shrub or small tree native to Europe and parts of Asia. It typically grows up to 3 meters tall and features thorny branches, dark green leaves, and white flowers that bloom in early spring. The plant produces small, dark blue fruits called sloe, which are often used to make jams, jellies, and the traditional British drink, sloe gin. Blackthorn is commonly found in hedgerows, woodlands, and along roadsides. It thrives in a variety of soil types and prefers sunny or partially shaded areas. The dense thickets formed by blackthorn provide important habitats for wildlife, including birds and small mammals, making it a valuable component of many ecosystems.