A shrub or small tree that can grow to 15m in height, but is often a lot smaller because of its use in hedging. There are at least 300 species of insect that hawthorn supports, including being a food plant for moths such as Small Eggar (Eriogaster lanestris), Light Emerald (Campaea margaritaria) and Rhomboid Tortrix (Acleris rhombana) to name but a few. Fruits are important food sources for many birds such as Fieldfares (Turdus pilaris) and Redwings (Turdus iliacus). It is also a good source of nectar for many species of bee, including the Honeybee (Apis mellifera). The dense thorny foliage makes it an ideal place for nesting birds and small mammals.