Prunus padus

Prunus padus, commonly known as bird cherry, hackberry, or Mayday tree, is a species of deciduous tree in the genus Prunus, native to northern Europe and Asia. It is a medium-sized tree, typically growing to a height of 8–16 meters (26–52 ft), characterized by its dark grey-brown bark with a strong, unpleasant almond-like scent when bruised, and its fragrant white flowers.

The leaves are alternate, simple, ovate to oblong-ovate, 5–10 cm long and 3–6 cm broad, with a serrated margin. They are a medium green color, turning yellow or reddish-brown in the autumn.

The flowers are produced in pendulous racemes 10–15 cm long in spring (late April to May in most of its range), giving rise to its common name "Mayday tree". Each flower is small, about 1 cm in diameter, with five white petals and numerous yellow stamens. The fragrance is sweet, but can be overwhelming in close proximity.

The fruit is a small drupe, 6–8 mm in diameter, turning from green to red to black as it ripens in late summer. The fruit is bitter and astringent but edible, often used to make jams and liqueurs. It is an important food source for birds, which aid in seed dispersal.

Prunus padus is often found growing in woodlands, hedgerows, and along riverbanks. It prefers moist, well-drained soils and can tolerate a range of light conditions, from full sun to partial shade. It is relatively fast-growing and short-lived, typically living for 50–60 years.

The wood is hard and close-grained, but of limited economic value due to the small size of the trees. It has been used for small wooden items such as tool handles and walking sticks.

Several cultivars of Prunus padus have been developed for ornamental purposes, selected for characteristics such as flower color, leaf shape, and growth habit.

The tree is susceptible to various diseases and pests, including aphids, spider mites, and fungal infections. It can also be invasive in some areas, spreading rapidly through seed dispersal.