Plant DetailShow Menu

Black Walnut Juglans nigra

Phonetic Spelling
JOO-glanz NY-gruh
Description

Juglans nigra prefers wet to dry loam or sand high acidic to slightly alkaline soil. It has a 3-lobed leaf scar resembling a monkey face, containing juglone which inhibits the growth of some plants beneath the tree.  This is a massive tree with an upright spreading open form.  It loses its lower branches.

Cultivars / Varieties:
Tags:
#deciduous#NC native#single trunk#native garden#Braham Arboretum
 
Cultivars / Varieties:
Tags:
#deciduous#NC native#single trunk#native garden#Braham Arboretum
  • Attributes:
    Genus:
    Juglans
    Species:
    nigra
    Family:
    Juglandaceae
    Uses (Ethnobotany):
    Yellow dye made from fruit husks, seed is used in candy-making, cleaning abrasives, and explosives.
    Country Or Region Of Origin:
    Eastern U.S.A and South Eastern Canada
    Distribution:
    Northeast Canada west to North Dakota, Southwest to Utah South to Texas East to Florida.
    Dimensions:
    Height: 50 ft. 0 in. - 70 ft. 0 in.
    Width: 50 ft. 0 in. - 70 ft. 0 in.
  • Whole Plant Traits:
    Plant Type:
    Native Plant
    Tree
    Leaf Characteristics:
    Deciduous
    Habit/Form:
    Open
    Oval
    Rounded
    Growth Rate:
    Medium
    Texture:
    Coarse
  • Cultural Conditions:
    Light:
    Full sun (6 or more hours of direct sunlight a day)
    Partial Shade (Direct sunlight only part of the day, 2-6 hours)
    Soil Drainage:
    Good Drainage
    Moist
    Occasionally Dry
    Occasionally Wet
    Very Dry
    NC Region:
    Coastal
    Mountains
    Piedmont
    Usda Plant Hardiness Zone:
    4a, 4b, 5a, 5b, 6a, 6b, 7a, 7b, 8a, 8b, 9a, 9b
  • Fruit:
    Fruit Color:
    Brown/Copper
    Gold/Yellow
    Display/Harvest Time:
    Fall
    Fruit Length:
    1-3 inches
    Fruit Description:
    Brown yellow green nut with fleshy hust
  • Flowers:
    Flower Color:
    Gold/Yellow
    Green
    Flower Inflorescence:
    Catkin
    Flower Bloom Time:
    Spring
    Flower Size:
    3-6 inches
    Flower Description:
    Single-stemmed catkin 2 ½ to 5 ½ in long male flowers and short spiked near twig end yellow-green in color female flowers appearing in late spring.
  • Leaves:
    Leaf Characteristics:
    Deciduous
    Leaf Color:
    Green
    Leaf Type:
    Compound (Pinnately , Bipinnately, Palmately)
    Leaf Arrangement:
    Alternate
    Leaf Shape:
    Lanceolate
    Ovate
    Leaf Margin:
    Lobed
    Serrate
    Hairs Present:
    No
    Leaf Length:
    > 6 inches
    Leaf Description:
    24" 10-24 leaflets ovate-lanceolate finely serrate. 3-lobed leaf scar resembling a monkey face. Leaves drop sporadically during the season.
  • Bark:
    Bark Color:
    Dark Brown
    Light Brown
    Surface/Attachment:
    Furrowed
    Ridges
    Bark Plate Shape:
    Diamond
    Bark Description:
    Brown ridged and furrowed with rough diamond pattern bark
  • Stem:
    Stem Is Aromatic:
    No