Juglans mandshurica, commonly known as Manchurian walnut, is a deciduous tree native to mixed broadleaf and conifer forests in Northeast Asia, including China, Taiwan, Japan, the Russian Far East, North Korea, and South Korea. It can grow up to 82 feet (25 meters) tall and is known for its exceptional hardiness, tolerating temperatures as low as -45°C (-49°F). The tree has a rounded crown with pinnate leaves that can reach up to 35 inches (90 cm) in length, contributing to its stately appearance. Male flowers are presented in drooping catkins, while female flowers are wind-pollinated and less conspicuous. The nuts, which are encased in a thick husk, ripen in August-October and are less commonly known as tigernuts.

The Manchurian walnut is valued for its ornamental qualities in colder temperate regions, where it is used in large gardens and parks. Its timber is prized for fine woodworking and furniture making. Unlike other walnut species, Juglans mandshurica contains fewer allelopathic compounds, which means it is less likely to inhibit the growth of surrounding plants through chemical means. This tree prefers full sun to partial shade and thrives in well-drained soils. It is relatively low-maintenance once established but can be susceptible to walnut blight and pests such as the walnut caterpillar.CC BY-SA 4.0