Black walnut
Juglans nigra
- Layer 1 · Canopy
- Edible companion
Status by region
No restrictions recorded in the lists we checked.
Checked against the European Union list (Regulation 1143/2014) · Portugal's national invasive species list (Decreto-Lei 92/2019).
Information based on the cited sources, not legal advice — always confirm your local rules.
About
Large deciduous tree native to North America. Produces high-quality timber and edible nuts with an intense flavour. Exudes juglone, requiring careful planning when companion planting in a food forest.
See which trees the black walnut grows well with
We have no trees recorded with this species yet. Start from the tree on your land.
No account needed.
Needs
- Water: Medium
- Light: Full sun
- Size: Large tree up to 30 m
- Mature diameter: 12 m
- Soils: Clay, Loam
- Climates: Atlantic coast, Inland / Continental
Calendar
- January — Planting
- February — Planting
- March
- April
- May
- June
- July
- August
- September — Harvest
- October — Harvest
- November — Planting
- December — Planting
- Harvest
- Planting
Medicinal use: The walnuts are edible and the shells have traditionally been used against parasites.
Where to buy
Related plants
Other species in the same layer or with the same function.
See which trees the black walnut grows well with
We have no trees recorded with this species yet. Start from the tree on your land.
No account needed.
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