About this tree
Juglans regia, commonly known as the English or Persian walnut, is native to a region spanning from the Balkans to central Asia and western China. It is widely cultivated across Europe and North America for its valuable nuts and timber. This deciduous tree can grow up to 25–30 m tall, with a broad, rounded crown and a deep root system. Its large, pinnate leaves appear late in spring and turn yellow in autumn. In spring, it bears catkins (male flowers) and small, greenish female flowers, which are wind pollinated. The edible nuts ripen in late summer and early autumn and are consumed by humans and wildlife alike, including squirrels, jays, and rodents. The tree provides excellent habitat for insects and supports a complex underground mycorrhizal network. However, few plants grow directly beneath it due to the release of juglone, a chemical compound that inhibits the growth of other species – an unusual form of natural herbicide. Walnut wood is highly prized for furniture and veneer due to its rich brown colour and grain. The tree prefers fertile, well-drained soil and a warm, sheltered location. It combination of commercial, ornamental, and ecological value make it a prominent feature in parks and gardens alike.