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Black Walnut

Juglans major

Details & Attributes

Plant Type(s) Tree
Native to Arizona Yes!
Water Needs Moderate-high
Sun Full sun
Pollinators Wind
Has Spines No
In relative feet, width by height
30-50' × 30-50'
Flowering Season April-May
Flower Color Green catkins
Minimum Temperature Range -10 °F
Leaf Description 9-15 Narrow leaflets
Fruit Furrowed nuts inside of a green skin which turns brown at maturity
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Elevation Range 3500-7000 ft.
Description A Primarily riparian tree found in wet Canyons, streamsides, and cienegas. Identifiable by its long petioled Leaves with 9-15 leaflets. Flowers are green catkins followed by wrinkly walnuts inside of a green skin which goes to brown when mature. These trees develop a thick trunk with furrowed bark, and ultimately reach heights Of 30-50 feet. Black walnut is widespread in Arizona, but Is especially prominent in central and eastern AZ. This is a great wildlife tree, and has a rich ethnobotanical history. Like other riparian trees, this is a fairly high water use species.