Blackthorn is a shrub or small tree belonging to the genus Prunus, native to Europe, Asia, and North Africa. Its scientific name is Prunus spinosa, and it is also known as sloe, sloeberry, or wild plum. The blackthorn has thorny branches and produces small, dark blue-black fruits called sloes that are used to make jams, jellies, and sloe gin. Historically, the wood of the blackthorn was used to make walking sticks, tool handles, and traditional Irish shillelaghs. The blackthorn also has medicinal properties, and its leaves and bark have been used for their anti-inflammatory, astringent, and diuretic effects.