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 in food forest companion planting.
It is harvested now — September is one of the harvest months.
See which trees 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 nuts are edible and the husks have traditionally been used against parasites.
Where to buy
May grow well with
Suggestions worked out from growing conditions — same soil and climate, complementary layers and functions. These are not observed guilds; treat them as a starting point to try on your own land.
GarlicAllium sativumsame climate · same soil · different layers · complementary functions · same exposure · same water needs
Lacy phaceliaPhacelia tanacetifoliasame climate · same soil · different layers · complementary functions · same exposure · same water needs
Anise hyssopAgastache foeniculumsame climate · same soil · different layers · complementary functions · same exposure · same water needs
DandelionTaraxacum officinalesame climate · same soil · different layers · complementary functions · same exposure · same water needs
Hairy vetchVicia villosasame climate · same soil · different layers · complementary functions · same exposure · same water needs
PennyroyalMentha pulegiumsame climate · same soil · different layers · complementary functions · same exposure · same water needs
Red cloverTrifolium pratensesame climate · same soil · different layers · complementary functions · same exposure · same water needs
DillAnethum graveolenssame climate · same soil · different layers · complementary functions · same exposure · same water needs
Related plants
Other species in the same layer or with the same function.
It is harvested now — September is one of the harvest months.
See which trees 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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