Common Walnut Tree | The Tree & Hedge Company

Soils

Common walnut will grow in most substrates that are nutrient rich well-drained, not too dry moist, slightly acid to alkaline soils. Preference would be calcareous and humid soils.

Location

Position Common walnut in sunny or light shade.

Annual Growth Rate

Common walnut trees are slow growing, usually 30-40cm per year.

pH TOLERANCE

Common walnut trees will happily grow in slightly acidic to alkaline soils. Preference would be calcareous soils.

Root Structure

Common walnut root system is deep and wide-spreading with lots of fibrous roots in the top layer

Potential

Common walnut is a hardy tree but can be sensitive to late frosts particularly when young. Tolerates heat, likes warmth, good in urban locations, sensitive to wind.

Annual Pruning

Only prune Common walnut to shape-up or to remove damaged or broken branches.

Characteristics

The Common walnut is prized for its delicious fruit. It is a hardy, easily adaptable tree that requires space and sunlight.

The common walnut usually matures at 15 to 20 metres in height and 8 to 10 metres wide. The broad round crown has strong, wide-spreading main branches and the light-grey coloured bark on the trunk of the tree is deeply vertically grooved.

Flowers appear in May the male flowers are green-brown catkins and the females are green cups. Leaves are elliptical, dark green, aromatic when crushed. Autumn colour is yellow.

Delicious walnuts only appear on the tree after it reaches around 15 years old. They ripen in September.