North Carolina Botanical Garden

Plant Index

Scientific Name:
Common Name:
Genus:
Family:

Juglans nigra

Juglans nigra L.

black walnut

Image ID: 5254
Image by: Hardin, J.W.
Image Collection: Herbarium Collection

PLANT INDEX

ID_PLANT: JUNI
SCIENTIFIC NAME: Juglans nigra
Include in WOTAS: 0
Publish to Web: 1
Last Modified: 2020-01-01

GENUS INDEX

GENUS CODE: JUGLA
GENUS SCIENTIFIC: Juglans
GENUS AUTHORITY: L.
GENUS COMMON: Walnut
GENUS SUMMARY: A genus of about 21 species, trees and shrubs, of Mediterranean Europe to e. Asia, and North America to Andean South America. Stanford, Harden, & Parks (2000) present a molecular phylogeny and a discussion of biogeography; our two species are distantly related within the genus, with J. nigra most closely related to sw. North American J. microcarpa and J. major, and J. cinerea most closely related to several e. Asian species.
GENUS IDENTIFICATION:
GENUS REFERENCES: Whittemore & Stone in FNA (1997); Stanford, Harden, & Parks (2000); Stone in Kubitzki, Rohwer, & Bittrich (1993); Stanford (1998).

FAMILY INDEX

FAMILY CODE: JUGLAN
FAMILY SCIENTIFIC: Juglandaceae
FAMILY AUTHORITY: A. Richard ex Kunth 1824
FAMILY COMMON: Walnut Family
FAMILY SUMMARY: A family of about 8 genera and 60 species, trees and shrubs, mostly temperate.
FAMILY REFERENCE: Stone in FNA (1997); Manos & Stone (2001); Elias (1972); Stone in Kubitzki, Rohwer, & Bittrich (1993).

NCBG DESCRIPTIVES

INTRO:
STEMS:
LEAVES:
INFLORESCENCE:
FLOWERS:
FRUITS:
COMMENTS:
HEIGHT:

DURATION: Perennial
HABIT: Tree

LEAF ARRANGEMENT: Alternate
LEAF COMPLEXITY: Pinnate
LEAF RETENTION: Deciduous

FLORAL CHARACTERISTICS
SYMMETRY:
BLOOM TIME: Apr

Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
		x	x	x

BLOOM COLOR:

White	Red	Pink	Orange	Yellow	Green	Blue	Lavender	Purple	Violet	Brown	Not Applicable
				x	x					x

FRUITING PERIOD: Oct.

DISTRIBUTION
HABITAT TYPE:
NATIVE RANGE: eastern United States

HORTICULTURAL
Plant Sale Text:

Bloom Table Text:

NCBG Location:

Cultural Notes:

SOIL MOISTURE: Dry, Average
LIGHT EXPOSURE: Sun, Part Shade, Shade
MINIMUM HARDINESS ZONE:
MAXIMUM HARDINESS ZONE:
GERMINATION CODE:
WILDLIFE VALUE:
DEER RESISTANCE:

GRIM ACCESSIONS

acc_id	acc_num	acc_dt	coll_id	Action
897	1985-0578			View
3117	1989-0077			View
3775	1991-0470			View
4465	1992-0621			View
5335	1995-0457			View
5668	1995-0792			View
6144	1995-1276			View

GRIM PLANTINGS

plt_num	acc_id	loc_num	pers_num	inst_dt	Action
1665	897	162	NCBG staff	0000-00-00	View
5185	3117	79	NCBG staff	0000-00-00	View
6083	3775	199	NCBG staff	0000-00-00	View
6793	4465	200	NCBG staff	1993-03-01	View
7795	5335	203	NCBG staff	1992-01-01	View
7796	5335	203	NCBG staff	1992-01-01	View
7797	5335	203	NCBG staff	1992-01-01	View
7798	5335	203	NCBG staff	1992-01-01	View
8182	5668	204	NCBG staff	1993-01-01	View
8799	6144	2	NCBG staff	0000-00-00	View

USDA PLANTS DATABASE

USDA Symbol: JUNI
USDA Common Name: Black Walnut
Native Status: L48 (N), CAN (N)
Distribution: USA (AL, AR, CO, CT, DC, DE, FL, GA, IA, IL, IN, KS, KY, LA, MA, MD, ME, MI, MN, MO, MS, NC, ND, NE, NH, NJ, NM, NY, OH, OK, PA, RI, SC, SD, TN, TX, UT, VA, WI, WV), CAN (MB, ON, QC)
Duration: Perennial
Growth Habit: Tree

NATIONAL WETLAND INDICATOR STATUS

Region:	AGCP	AK	AW	CB	EMP	GP	HI	MW	NCNE	WMVE
Status:	UPL		UPL		FACU	FACU		FACU	FACU	UPL

This information is derived from the U.S. Army Corps of Engineers 2016 National Wetland Plant List, Version 3.3 (Lichvar, R.W., D.L. Banks, W.N. Kirchner, and N.C. Melvin. 2016. The National Wetland Plant List: 2016 wetland ratings. Phytoneuron 2016-30: 1-17. Published 28 April 2016. ISSN 2153 733X). Regions: AGCP-Atlantic and Gulf Coastal Plain, AK-Alaska, AW-Arid West, CB-Caribbean, EMP-Eastern Mountains and Piedmont, GP-Great Plains, HI-Hawaii, MW-Midwest, NCNE-Northcentral and Northeast, WMCV-Western Mountains, Valleys & Coast

WEAKLEY FLORA

SCIENTIFIC NAME: Juglans nigra
COMMON NAME: Black Walnut
SYNONYMY: [= C, F, FNA, G, K1, K3, Mo, Pa, RAB, Va, W, WH3, WV; = Wallia nigra (Linnaeus) Alefeld - S]
PHENOLOGY: Apr; Oct.
HABITAT: Moist, nutrient-rich forests of floodplains and slopes, calcareous hammocks.
COMMENTS: MA west to MN, south to Panhandle FL and TX. The dark brown wood is famous for cabinetry and other uses; it is one of the most prized of North American hardwoods. The nuts, though difficult to crack, are prized for their intense flavor. The husk is used as a dye. Country people dehusk the nuts by putting them in dirt or gravel driveways where the passage of car tires removes the husk but does not crack the nut.
RANGE MAP: Juglans nigra.png

Key to Map Symbols

ABOUT FAMILY (Weakley Flora)
Juglandaceae A. Richard ex Kunth 1824 (Walnut Family)
SUMMARY: A family of about 8 genera and 60 species, trees and shrubs, mostly temperate.
REFERENCE: Stone in FNA (1997); Manos & Stone (2001); Elias (1972); Stone in Kubitzki, Rohwer, & Bittrich (1993).

ABOUT GENUS (Weakley Flora)
Juglans L. (Walnut)
SUMMARY: A genus of about 21 species, trees and shrubs, of Mediterranean Europe to e. Asia, and North America to Andean South America. Stanford, Harden, & Parks (2000) present a molecular phylogeny and a discussion of biogeography; our two species are distantly related within the genus, with J. nigra most closely related to sw. North American J. microcarpa and J. major, and J. cinerea most closely related to several e. Asian species.
REFERENCE: Whittemore & Stone in FNA (1997); Stanford, Harden, & Parks (2000); Stone in Kubitzki, Rohwer, & Bittrich (1993); Stanford (1998).

HERBARIUM RESOURCES

SERNEC: Find Juglans nigra in Southeast Regional Network of Experts and Collections (if available)
UNC SERNEC: Find Juglans nigra in University of North Carolina Chapel Hill Herbarium - Southeast Regional Network of Experts and Collections (if available)

WEB RESOURCES

USDA: Find Juglans nigra in USDA Plants
NPIN: Find Juglans nigra in NPIN Database
FNA: Find Juglans nigra in the Flora of North America (if available)
Google: Search Google for Juglans nigra

IMAGE USE RECORDS

ID IMAGE: 5254 - Primary Image FloraQuest Plant Detail Page (Landscape Preferred)
ID IMAGE1: 5254 - Primary Image WOTAS
ID IMAGE2: 15068 - Secondary Image WOTAS
ID IMAGE3: 5254 - Primary Image Plant Sale Sign (Landscape Only)
ID IMAGE4: 0 - Primary Image New Plant Sale Label (Portrait Only)