It belongs to the Juglandaceae family, a group that also includes hickories andpecans.
It has grooved, red-brown bark and an oval-shaped canopy.
This tree is also known regionally as Columbian walnut, Ecuador walnut, and Peruvian walnut.
The Spruce / Evgeniya Vlasova
It is rarely grown in the United States.
In drier conditions, there are usually several slender trunks.
Regionally, this tree is sometimes known as New Mexico walnut, mountain walnut, or river walnut.
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This tree prefers moist soil and grows naturally in ravines and river beds.
The edible walnuts from this tree are cultivated for their distinctive and desirable taste.
Many cultivars of this tree have been developed for improved quality nuts or wood.
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The tree crowns are usually dense and rounded.
The leaves are huge, up to 24 inches long consisting of 1 to 23 lance-shaped leaflets.
Autumn color is a fairly bland yellow.
The Spruce / Evgeniya Vlasova
This tree is sometimes known as the American walnut or the eastern black walnut.
It is a slow-growing species that rarely lives longer than 75 years.
In different regions, it may be known as oilnut, white walnut, or long walnut.
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The immature and mature fruits of this tree are also consumed.
The main trunk often forks close to the ground, making it appear that two trees have grown together.
The California black walnut has deeply channeled thick bark that furrows with maturity.
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It has the familiar walnut leavespinnately compound with 11 to 19 lance-shaped leaflets.
The nuts are small, hard, and difficult to remove.
This plant may also be called the southern California black walnut.
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This is the walnut that provides more of the edible walnuts sold in stores.
Smooth olive-brown bark on young trees gradually turns silvery gray and rough as the tree ages.
The compound leaves are 10 to 16 inches long, clustered in 5 to 9 lance-shaped leaflets.
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The fruits fall in autumn, and the nuts are relatively thin-shelled with richly flavorful seeds inside.
This tree is also known as the common walnut or Persian walnut.
Many named cultivars are available.
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The trunk on mature trees can be 5 to 6 feet in diameter at the base.
Some authorities consider this plant a variation of the California walnut, giving it the nameJuglans californicavar.hindsii.
Japanese Walnut
Japanese walnut (Juglans ailantifolia) is a deciduous tree with light grey bark.
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The male flowers are yellow-green catkins produced in spring when new foliage appears.
The female flowers have attractive pink or reddish pistils.
Other common names for this tree include heartnut and siebold walnut.
Jerry Friedman/Wikimedia Commons/CC BY 2.0
Its nuts are edible but small and difficult to extract.
Its compound leaves have 7 to 19 leaflets.
The fissured bark is grayish-brown in color.
The tree grows quite fast, achieving its adult size within 20 years.
This plant usually branches out near the ground and has a broad rounded crown.
The bark is gray to dark brown and develops deep fissures over time.
The pinnately compound leaves have narrow leaflets 1 to 3 1/2 inches long, with finely serrated edges.
Walnut trees also host numerousbutterfly species that help pollinatethe area’s flora.
Growing Tip
Like most landscape trees, walnuts will grow best if they receive full sun.
However, walnuts have less tolerance for dry conditions than many trees.
They need moist but well-drained soil, and they often struggle in regions that do not receive adequate rainfall.
No, you cannot eat walnuts straight from the tree.
The green husks that are on the tree are unripe walnuts.
The husks need to be removed, and then the nut is inside a hard shell.
It is best left to dry for the easiest cracking and best tastes.
Walnut trees are fast growing trees that grow at an average rate of 12 to 18 inches per year.
Gather all the details it’s possible for you to about these features, and research within the speciesJuglans.
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