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Juglans nigra

Is Juglans nigra growing in your garden? Record it and all of your plants in Known.

Names

Common Names
American Black Walnut, American Walnut, Black Walnut, Eastern Black Walnut

Growth

Height
1181-1200 inches
Spread
75-100 feet
Growth Rate
Fast, 3-4 feet per year (sources), Moderate, 0.25-0.33 inches per year (sources)

Appearance

Bloom Color
Yellow-green
Foliage Color
Yellow-green to green above, slightly paler below.
Fall Foliage Color
Golden yellow in autumn.

Environment

Hardiness Zones
Zones 5-8
Sunlight Requirements
Full Sun: ideally 8–14 hours of direct sunlight per day, Partial Sun: 4–8 hours, Partial Shade: 0–4 hours, Full Shade: not tolerated
Soil Type
Deep, well-drained soils deeper than 1 meter, typically organic-rich loams (sandy loam or silty loam) that hold adequate moisture and are fertile.
Soil Drainage
Well-drained soil (not wet or waterlogged); deep, rich soils that hold moisture, typically sandy loam or silty loam, are ideal.
Soil pH
6.0-7.5

Lifecycle

Lifecycle
Perennial
Leaf Lifecycle
Deciduous
Seasons of Interest
Spring and Fall
Bloom Time
Spring

Reproduction

Propagation Methods
Seeds, Cuttings, Layering, and Grafting/Budding are propagation methods; Spores and Division are not listed.

Wildlife

Attracts Wildlife
Attracts birds and butterflies; not noted as attracting bees, hummingbirds, or other pollinators

References

Taxonomy

Taxonomic Rank
Species
Author
L.
Publication
Sp. Pl. : 997 (1753)

Superior Taxa

Kingdom
Plantae
Subkingdom
Pteridobiotina
Phylum
Angiosperms
Order
Fagales
Family
Juglandaceae
Genus
Juglans

Synonyms

Juglans rugosa Juglans pitteursii Juglans nigra f. nigra Wallia nigra Juglans nigra f. oblonga Juglans nigra unr. oblonga Juglans nigra f. laciniata

References

Taxonomic data from World Flora Online, accessed June 20, 2024