Walnut

Juglans regia

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

Native to Eastern Europe and Central Asia, it is a large deciduous tree producing nuts rich in healthy oils. It occupies the upper canopy layer in food forests, providing a valuable harvest in autumn.

It is harvested now — September is one of the harvest months.

See the guild for a walnut on your land

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Needs

Water: Medium
Light: Full sun
Size: Large tree up to 25 m
Mature diameter: 10 m
Soils: Loam, Clay, Limestone
Climates: Atlantic coast, Inland / Continental, Hot, dry Mediterranean, Mountain / cold

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 highly nutritious and tea made from the leaves is traditionally used for its astringent properties.

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.