Deciduous shrubs and trees with pendent, male flowers in late winter and in early spring, borne before the unfolding of the leaves.
Latin name: Corylus avellana "Contorta"
They grow in moderately moist, neutral or alkaline soils, in full sun or part shade.
Plant alone, in groups, in hedges or rows.
Propagated by seeds, by offshoots and by grafting.
Shrub with yellow flowers, especially attractive in winter, when its bare, twisted branches contrast magnificently with the snowy background.