Prunus spinosa is a species of flowering plant native to Europe and Asia. It is commonly known as sloe, blackthorn, or wild plum. The sloe is a small, blue-black fruit that ripens in autumn and is used to make sloe gin and jams. The blackthorn is a deciduous shrub or small tree, which has a dense thorny foliage and white flowers that bloom in early spring. The wild plum is a fruit that is similar in taste and appearance to cultivated plums. Synonyms for prunus spinosa include Prunus insititia, Prunus domestica subsp. insititia, and Prunus subcordata. All of these species are part of the Prunus genus and are closely related.