English walnut Juglandaceae Juglans regia L. Listen to the Latin   symbol: JURE80
Other Fact Sheets
Leaf: Alternate, pinnately compound with 5 to 7 (occasionally 9) leaflets, to 12 to 18 inches long, leaflets are ovate to obovate with entire or sometimes finely serrated margins, to 5 inches long, rachis is stout, terminal leaflets the largest; purple-brown when developing, shiny green when mature, very aromatic when crushed.
Flower: Monoecious; males are single-stemmed catkins to 6 inches; females in clusters of 3-9, with or just after the leaves.

Fruit: Round nut, to 2 inches in diameter; husk is moderate and indehiscent, initially bright green but turning brown, nut is relatively thin and smooth with a few shallow furrows; flesh is creamy white to light brown, sweet, oily (edible); matures in fall.

Twig: Stout, light brown, with a buff-colored chambered pith, terminal buds are large, broadly pointed, often paired and pubescent, lateral buds are much smaller, pre-formed male catkins often in axils of leaves, leaf scar 3-lobed.

Bark: Light, ashey gray, with flattened ridges, developing a striking diamond shaped pattern.

Form: Generally to 60 feet, with an equally wide spread crown; obvious stout twigs.
 
USDA Plants Database
Juglans regia is planted in the highlighted USDA hardiness zones to the left and is not known to widely escape cultivaton.

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