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Black Walnut

Juglans nigra.

The eastern American black walnut, is a species of deciduous tree in the walnut family native to North America. It grows mostly in riparian zones, from southern Ontario, west to southeast South Dakota, south to Georgia, northern Florida and southwest to central Texas. Wild trees in the upper Ottawa Valley may be an isolated native population or may have derived from planted trees.

Shipping size: 18" - 24"


  • $6.60


The trunk is 30–40 m (100–130 ft) high. Under forest competition, it develops a tall and straight trunk. When grown in an open area it has a short trunk and broad crown.

The bark is typically grey-black and deeply furrowed into thin ridges that gives the bark a diamond shaped pattern.

The buds are pale silky and covered in downy hairs. The terminal buds are ovate, and 8 mm (5⁄16 in) long, and slightly longer than broad, the lateral buds are smaller and superposed

The leaves are compound and alternately arranged on the stem. They are 30–60 cm (1–2 ft) long, typically even-pinnate but there is heavy variation among leaves. The stems have 15–23 leaflets, with the largest leaflets located in the center, 7–10 cm (2 3⁄4–4 in) long and 2–3 cm (3⁄4–1 1⁄4 in) broad. The leaflets have a rounded base and a long pointed (acuminate) tip as well as having a serrated edge. The leaves are overall dark green in color and are typically hairy on the underside.

Black walnut is monoecious. The male (staminate) flowers are in drooping catkins 8–10 cm (3 1⁄4–4 in) long. These are borne from axilary buds on the previous year's growth. The female (pistillate) flowers are terminal, in clusters of two to five on the current year's growth.

Fruit Ripens during the autumn into a fruit (nut) with a brownish-green, semifleshy husk and a brown, corrugated nut. The whole fruit, including the husk falls in October; the seed is relatively small and very hard.

For more information, visit https://plants.usda.gov/core/profile?symbol=JUNI

Plant Hardiness Zone Map

Zone: 4 to 9

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W3772 Hwy 156 | Pulaski, WI 54162