Sources

GBIF — Scientific name
GBIF - Juglans nigra (species) taxonomy record — Plant family
RHS Pests A–Z; UC IPM Pest Notes — Pest vulnerabilities
USDA NRCS Plant Guide — Plant family, Years to maturity, Height (cm), Sun needs, Soil notes, Lifespan, Water needs
USDA PLANTS Database, Cornell Cooperative Extension — Root depth
NC State Extension — Years to maturity, Height (cm)
PFAF — Edible
PFAF (Plants for a Future), USDA PLANTS Database — Is allelopathic
PFAF (Plants For A Future) — Min. hardiness temp (°C)
Sprent 2009, Legume Nodulation (Wiley-Blackwell); actinorhizal genera per Pawlowski & Demchenko 2012 — Nitrogen fixer
Penn State Extension — gardening around walnuts (juglone) — Allelopathy effect
Wikipedia — Plant family, Years to maturity, Height (cm), Sun needs, Soil notes, Lifespan, Edible

Black Walnut

tree

Juglans nigra

NA native. Strongly allelopathic — produces juglone that kills many nearby plants. Plant well away from gardens. Premium hardwood and intensely flavoured nuts.

Deciduous
Nut tree
Native
Allelopathic
Shade-tolerant

Pests & beneficial insects

🐛 Prone to: Aphids, Caterpillars.

Attract Hoverflies, Lacewings, Ladybugs, Parasitic wasps to keep them in check.

How to grow Black Walnut

Space1500 cm apart
GrowFull sun

Water: Medium · Height: 3000 cm · Soil: Deep, well-draining, fertile

Want exact dates? Create a free account to see sowing windows tuned to your local frost dates.

Sources

GBIF — Scientific name
GBIF - Juglans nigra (species) taxonomy record — Plant family
RHS Pests A–Z; UC IPM Pest Notes — Pest vulnerabilities
USDA NRCS Plant Guide — Plant family, Years to maturity, Height (cm), Sun needs, Soil notes, Lifespan, Water needs
USDA PLANTS Database, Cornell Cooperative Extension — Root depth
NC State Extension — Years to maturity, Height (cm)
PFAF — Edible
PFAF (Plants for a Future), USDA PLANTS Database — Is allelopathic
PFAF (Plants For A Future) — Min. hardiness temp (°C)
Sprent 2009, Legume Nodulation (Wiley-Blackwell); actinorhizal genera per Pawlowski & Demchenko 2012 — Nitrogen fixer
Penn State Extension — gardening around walnuts (juglone) — Allelopathy effect
Wikipedia — Plant family, Years to maturity, Height (cm), Sun needs, Soil notes, Lifespan, Edible

Grow or find Black Walnut

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