A rowan tree can grow to 15 m tall, and live for 200 years.

A rowan tree has clusters of tiny cream flowers, which develop into scarlet berries with seeds which are dispersed by birds. Several moth caterpillars live on rowan leaves. Rowan flowers provide pollen and nectar for bees and other pollinating insects. In autumn, the berries are a good source of autumn food for many species of bird.

Rowan berries, although sour, are edible to humans. Rowan was thought to protect against witches! In Celtic mythology, Rowan is known as the tree of life.