Juglans nigra

Black Walnut

Form and Growth Characteristics:
Plant Type - Tree
Growth Rate - Fast, 2-3' per year on favorable soils when young
Mature Height - 50-70'
Mature Width - 50-70'
Longevity - Long: matures at about 150 years, may live to 250 years

Ornamental Characteristics:
Flower - Yellow, late May - early June, monoecious: male flowers clustered in short, pencil-like drooping catkins
Fruit - Corrugated nut in a green, smooth, 2" diameter husk which turns black and rots on ground.
Leaf -
Fall Color - Golden yellow, drop early
Bark - Dark brown to grayish-black, divided by deep, narrow furrows into thin ridges, forming a roughly diamond-shaped pattern
Other Features - Wood is highly prized for carpentry uses. Branches have a chambered pit. Roots produce juglone which is harmful to many other plants growing in its root zone.
Possible Use -
Season Of Interest -

Culture and Care:
Care Requirements - Prefers deep, rich, moist soil but can tolerate drier, clay soils zone 4-9
Native Habitat - Massachusetts to Florida, and west to Minnesota and Texas
Diseases and Insects - Roots exude a substance toxic to many other plants, few insect or disease problems on healthy trees.
Strength - Stems with chambered pith
Weakness -

Plants of this taxon:

Find Related Plants:
- Other plants with the common name Walnut.
- Other plants of the family Juglandaceae.
- Other plants of the genus Juglans.
- Other plants of the species Juglans nigra.