Juglans nigra

Juglans nigra

  • BOTANICAL NAME: Juglans nigra
  • PRONUNCIATION: JU-glans NI-gra
  • COMMON NAME: Black Walnut
  • FAMILY: Juglandaceae
  • NATIVITY: Massachusetts south to Florida, west to Minnesota and Texas.
  • GROWTH HABIT: Oval to rounded large tree growing 50'-75' (150') tall.
  • HARDINESS: Zone 5-8
  • CULTURE: Full sun in rich, moist well-drained soil. Will tolerate dry, poor soil but grows much more slowly.
  • SUCCESSIONAL STATUS:  Seral
  • FACULTATIVE STATUS:  Facultative Upland
  • LANDSCAPE USE: Large tree good for open areas and naturalizing. Nuts attract squirrels from miles around. Wood is highly valued for cabinetry.
  • FOLIAGE: Alternate, pinnately compound with 15-23 leaflets. Leaflets 2"-5" long, ovate, acuminate apex, rounded base with irregular serrations. Leaves fragrant when crushed.
  • BUDS: Light-brown and pubescent. Ovate, 1/3" long, laterals smaller.
  • BARK: Deeply ridged and furrowed. Dark-brown to black in color.
  • FRUIT: Nut, 1 1/2" - 2" diameter. Edible.
  • PROPAGATION: Seed.
  • PESTS: None serious. Plants exude juglone, a chemical that deters plant growth beneath the trees.
  • CULTIVARS:

 

 

University of Delaware

University of Delaware Botanic GardensNewark, DE 19716Phone: 302 831-0153