Size- conical in shape, mature trees can reach a height of around 28m and live to approx 60 years.

Where to find it- its natural habitat is moist ground near rivers, ponds and lakes and it thrives in damp, cool areas such as marshes, wet woodland and streams where its roots help to prevent soil erosion.

Value to wildlife- Alder is the food plant for the caterpillars of several moths. Catkins provide an early source of nectar and pollen for bees, and the seeds are eaten by various birds.