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Black Walnut

Juglans nigra

In the Carolinas and Georgia, found in moist, nutrient-rich forests of floodplains and slopes, calcareous hammocks. Weakley, Flora of the Southeastern United States (2025), Carolinas & Georgia edition What its natural habitat tells you

52
Strong

Native to Louisiana (estimated). How scores work Is it native here?

Profile 100%

Height
50–75 feet
Spread
50–70 feet
Light
Full sun, Partial shade
Soil moisture
Dry to moist

Space about 30 ft apart from its recorded spread. Enter your bed size for a count

Will it fit your yard?

At a glance

Life cycle
Woody perennial
Leaves
Deciduous
Bloom
April to May
Fruiting season
October

Recorded in 31 Louisiana parishes.

Natural habitats

Places it grows wild. Not a planting requirement. Each habitat page lists the plants and wildlife also found there.

1 of 2

Floodplain and bottomland forests

Forests on low ground beside rivers and streams that flood from time to time.

Forests and woodlands

Forest or woodland where the source does not say how moist or dry.

All habitats

Ecological relationships

Who uses this plant?

What these records mean

105CaterpillarsGenus host records with ranges including LA

Genus host records with ranges including LA · Juglans

  • Actias lunaLuna Moth
  • Citheronia regalisRegal Moth
  • Satyrium calanusBanded Hairstreak
  • Abagrotis alternataGreater Red Dart, Mottled Grey Cutworm
  • Acharia stimuleaSaddleback Caterpillar Moth
  • Achatia distinctaDistinct Quaker
  • Acrobasis caryivorellaPecan Nursery Casemaker, Hickory Shoot Moth
  • Acrobasis demotellaWalnut Shoot Moth
  • Acrobasis juglandisPecan Leaf Casebearer
  • Acrobasis stigmellaHickory Bud-and-Shoot Borer
Show all 105
  • Acronicta americanaAmerican Dagger
  • Acronicta impletaYellow-Haired Dagger
  • Acronicta oblinitaSmeared Dagger
  • Allotria elonymphaFalse Underwing
  • Alsophila pometariaFall Cankerworm Moth
  • Amorpha juglandisWalnut Sphinx
  • Amphipyra pyramidoidesMiranda Underwing, Copper Underwing, Copper Amphipyra
  • Amyelois transitellaNavel Orangeworm
  • Anatrachyntis rileyiPink Scavanger Caterpillar
  • Antheraea polyphemusPolyphemus Moth
  • Apatelodes torrefactaSpotted Apatelodes
  • Archips argyrospilaFruit-Tree Leafroller Moth
  • Archips infumatanaSmoked Leafroller Moth
  • Archips rileyanaSouthern Ugly-Nest Caterpillar Moth
  • Argyrotaenia juglandanaHickory Leafroller
  • Automeris ioIo Moth
  • Baileya australisSmall Baileya
  • Baileya dormitansSleeping Baileya
  • Baileya levitansPale Baileya
  • Baileya ophthalmicaEyed Baileya
  • Caloptilia blandellaWalnut Caloptilia
  • Catocala innubensThe Betrothed
  • Catocala lacrymosaTearful Underwing
  • Catocala maestosaSad Underwing
  • Catocala nebulosaClouded Underwing
  • Catocala neogamaThe Bride
  • Catocala piatrixThe Penitent, Penitent Underwing
  • Catocala viduaWidow Underwing
  • Cecrita biundataWavy-Lined Heterocampa
  • Cecrita guttivittaMaple Prominent, Saddled Prominent
  • Cenopis directanaChokecherry Leafroller Moth
  • Chaetaglaea sericeaSilky Sallow
  • Coelodasys unicornisUnicorn Caterpillar Moth
  • Coleophora laticornellaPecan Cigar Casebearer
  • Colocasia propinquilineaClosebanded Yellowhorn
  • Cydia caryanaHickory Shuckworm, Pecan Shuckworm
  • Cydia latiferreanaFilbertworm
  • Datana drexeliiDrexel's Datana
  • Datana integerrimaWalnut Caterpillar Moth
  • Datana ministraYellow-Necked Caterpillar Moth
  • Derrima stellataPink Star
  • Dichomeris ligulellaPalmerworm
  • Dryocampa rubicundaRosy Maple Moth, Green-Striped Mapleworm, Rosy Dryocampa
  • Eacles imperialisImperial Moth, Imperial Spiny Caterpillar
  • Ectropis crepusculariaThe Small Engrailed, Saddleback Looper
  • Egira alternansAlternate Woodling
  • Elaphria versicolorVariegated Midget
  • Ennomos magnariaMaple Spanworm Moth, Notchwing Geometer
  • Ennomos subsignariaElm Spanworm Moth
  • Erannis tiliariaLinden Looper Moth, Western Winter Moth, Lime Looper
  • Estigmene acreaSalt Marsh Moth, Acrea Moth
  • Eupithecia miserulataCommon Eupithacia, Common Pug
  • Eutrapela clematariaCurved-Tooth Geometer, Purplish Brown Looper
  • Euzophera semifuneralisAmerican Plum Borer
  • Gretchena amatanaLikeable Gretchena
  • Gretchena bollianaPecan Bud Moth
  • Halysidota tessellarisBanded Tussock Moth, Pale Tiger Moth
  • Haploa leconteiLeconte's Haploa
  • Haploa reversaReversed Haploa
  • Heterocampa pulvereaWhite-Blotched Heterocampa
  • Hyalophora cecropiaCecropia Silkmoth, Cecropia Moth
  • Hypagyrtis unipunctataOne-Spotted Variant
  • Hyphantria cuneaFall Webworm
  • Iridopsis defectariaBrown-Shaded Gray, Willow Looper
  • Iridopsis humariaSmall Purplish Gray
  • Isa textulaCrowned Slug
  • Lithophane antennataAshen Pinion
  • Lochmaeus bilineataDouble-Lined Prominent
  • Lochmaeus manteoVariable Oakleaf Caterpillar Moth
  • Malacosoma americanaEastern Tent Caterpillar
  • Malacosoma disstriaForest Tent Caterpillar
  • Melanolophia canadariaCanadian Melanolphia, Variable Redmarked Looper
  • Morrisonia confusaConfused Woodgrain
  • Nemoria bistriariaTwo-Striped Emerald, Red-Fringed Emerald
  • Oedemasia concinnaRed-Humped Caterpillar, Red-Humped Appleworm
  • Oedemasia leptinoidesBlack-Blotched Schizura
  • Orgyia leucostigmaWhite-Marked Tussock Moth
  • Paleacrita vernataSpring Cankerworm Moth
  • Panopoda rufimargoRed-Lined Panopoda
  • Parallelia bistriarisMaple Looper Moth
  • Phigalia strigatariaSmall Phigalia, Small Oak Looper
  • Phigalia titeaThe Half-Wing Geometer, Spiney Looper, Eastern Oak Looper
  • Phobetron pitheciumHag Moth, Monkey Slug
  • Platynota stultanaOmnivorous Leafroller
  • Prochoerodes lineolaLarge Maple Spanworm Moth
  • Prolimacodes badiaSkiff Moth, Skiff Caterpillar
  • Psaphida electilisChosen Sallow
  • Pyrrhia ciliscaAmerican Bordered Sallow, Noble Sun Moth
  • Schizura ipomaeaeMorning-Glory Prominent, Checkered-Fringe Prominent
  • Spilosoma virginicaVirginian Tiger Moth, Yellow Woolybear Moth, Yellow Bear
  • Spodoptera frugiperdaFall Armyworm Moth
  • Stigmella juglandifoliellaPecan Serpentine Leafminer
  • Sympistis infixaBroad-Lined Sallow
  • Dichomeris ventrellus
  • Gretchena concitatricana
Shropshire & Tallamy 2025, Lepidoptera of North America north of Mexico, ZooKeys 1261 (ODbL)
0BeesSoutheastern regional records
0Specialist beesPollen specialists
—BirdsRecorded genus food-resource interactions; not a state feeding claim

No records yet · Ants · Beetles · Flies · Adult butterflies / moths · Other wasps · Other insects

Growing and identification

Plant details

Family
Juglandaceae
Hardiness
Zones 4a–9b
Soil pH
Acidic to neutral
Flower color
Yellow or green
Growth rate
Rapid
Growth habit
Single stem
Foliage color
Green
Fruit begins
October
Fruit ends
October

Safety has not been reviewed for this plant; check toxicity and thorns before planting.

Growing sources and scope

Conservation status

Louisiana rankSNR
Global rankG5
LA statusNot verified
Federal statusNot verified

Conservation source Global and federal source

In your garden

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