Toxic Plant Known to be toxic - Toxic to mammals if ingested.
Image of Juglans nigra
image of Deciduous Tree
Juglans nigra
Black walnut
Noyer noir

Obsolete Names

  • American walnut
No seeds available for this plant.

We are not accepting seeds for this plant at the moment.

Bloom colour: Green Bloom period: May - June
Max Height: 100.0 feet
Max Width: 100.0 feet
Light condition:
Full sun More than 6 hours of direct sun a day
Soil conditions:
Moisture medium Tolerates medium soil condition
Lifespan : Perennial
Gardener Experience:
does not spread Does not spread uncontrollably
Landscape uses:
shoreline_rehab Suitable for shoreline rehabilitation
Ecological Benefits: No ecological benefits information available.
Tolerates:
limestone Tolerant Tolerates limestone conditions
acidic soil Tolerant Tolerates acidic soil conditions
juglone Tolerant Tolerates juglone conditions

Plant Distribution

Native to Ottawa region: No

Distribution according to VASCAN

Distribution: Juglans nigra
Ephemeral Native Introduced Excluded Extirpated Doubtful Absent
View taxonomy on Canadensys

View on iNaturalist

Thrives in Ecozones

  • Ecozone-Mixed Wood Plain
  • Ecozone-Boreal_Plains

Butterflies Supported by Juglans nigra

  • Polygonia faunus (Green Comma)
  • Prochoerodes lineola (Large Maple Spanworm)
  • Satyrium calanus (Banded Hairstreak)

Bees Supported by Juglans nigra

No bee data available for this plant.

Complementary Plants Plants that grow in similar conditions, that bloom at the same time.

  • No complementary plants found.

Sowing Information

  • Sowing depth: Sow 1-2 inch deep
  • Sow anytime
  • Stratification duration: 0 days
  • Self-seeding

Harvesting Information

  • Harvesting indicator: Pods are released from plant
  • Harvesting mean: Nut has been released from tree
  • Seed Viability Test: Put seed in container filled with water. If the seed goes at the bottom of the container, you can donate. If seed floats, do not donate.
  • Packaging Measure: Six (6) seeds (eyeball)
  • Seed Storage: Air Dry in paper bag or open container, for a few days until crisp, shaking seeds to move them once in a while to prevent molding
  • On Cultivar: Yes, do not donate unless you know source, and there are no known cultivars in your garden or at proximity