Black Walnut

Juglans nigra L.

Walnut family

Plant Type
Tree
Life Cycle
Perennial
Mature Height
100.0 feet
Spread
7.3 feet
Flower Color
Yellow
Bloom Time
Late Spring

Growing Conditions

Light

Shade Tolerance Intolerant

Water

Water Use High
Drought Tolerance Low
Flood Tolerance None

Soil

Soil Types Loam
CaCO3 Tolerance High
Fertility Need High

Stress Tolerance

Fire Tolerance High
Salt Tolerance None

Climate

pH Range 4.6 – 8.2
Frost-Free Days 170 days
Precipitation 30 – 60 in

Ecosystem & Wildlife

Pollinators Larval Host (Butterfly); Larval Host (Moth); Wind
Larval Host Acrobasis angusella, Acrobasis caryivorella, Acrobasis demotella, Acrobasis indigenella, Acrobasis juglandis, Acrobasis juglanivorella, Acrobasis latifasciella, Acronicta afflicta, Actias luna luna, Alsophila pometaria, Amorpha juglandis, Antheraea polyphemus polyphemus, Automeris io io, Baileya dormitans, Caloptilia blandella, Caloptilia juglandiella, Cameraria caryaefoliella, Catocala maestosa, Catocala neogama, Catocala palaeogama, Catocala piatrix, Catocala retecta, Catocala vidua, Citheronia regalis, Citheronia splendens sinaloensis, Coleophora laticornella, Coleophora pruniella, Colocasia propinquilinea, Crocigrapha normani, Cydia caryana, Cydia pomonella, Datana angusii, Datana integerrima, Datana ministra, Dichomeris ligulella, Epinotia timidella, Euproctis chrysorrhoea, Eutrapela clemataria, Euzophera semifuneralis, Gretchena bolliana, Halysidota tessellaris, Heterocampa umbrata, Homohadena infixa, Hyalophora cecropia, Hypagyrtis unipunctata, Hypena madefactalis, Hyphantria cunae, Lochmaeus manteo, Lophocampa caryae, Lophocampa maculata, Lymantria dispar, Malacosoma americana, Nemoria bistriaria, Nemoria bistriaria bistriaria, Nites betulella, Orgyia leucostigma, Orgyia vetusta, Orthosia garmani, Orthosia revicta, Paleacrita vernata, Parallelia bistriaris, Phigalia plumogeraria, Phigalia titea, Phobetron pithecium, Prolimacodes badia, Pyroderces rileyi, Pyrrhia umbra, Sabulodes caberata, Satyrium calanus, Satyrium calanus falacer, Schizura concinna, Schizura ipomoeae, Schizura leptinoides, Spilosoma virginica, Stigmella juglandifoliella
Fall Color No
Evergreen No

Native Range

  • USA:  Alabama, Arkansas, Connecticut, Delaware, District of Columbia, Florida, Georgia, Illinois, Indiana, Iowa, Kansas, Kentucky, Louisiana, Maryland, Massachusetts, Michigan, Minnesota, Mississippi, Missouri, Nebraska, New Jersey, New York, North Carolina, Ohio, Oklahoma, Pennsylvania, Rhode I., South Carolina, South Dakota, Tennessee, Texas, Virginia, West Virginia, Wisconsin
  • CAN:  Ontario

Regional Native Status: L48 (N), CAN (N)

State-level native status is based on data available through Plants of the World Online. Regional Native Status comes from the USDA Plants Database. For more detailed native status information, please refer to BONAP.

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