🌰 Black walnut

🔍 Identify it without mistakes

Large hardwood tree with dark bark deeply furrowed into diamond patterns, compound leaves with numerous leaflets (15-23) releasing a characteristic strong aromatic scent when crushed. Large round fruits with a fleshy green husk that turns black and heavily stains hands, containing a nut with an extremely hard, thick shell deeply sculpted with grooves.

1. dark bark with deep diamond-patterned furrows
2. compound leaf with 15-23 leaflets, strong smell when crushed
3. round fruit with a fleshy green husk that turns black and stains
4. extremely hard nut shell, deeply grooved

🍽️ Eating it

Preparation : remove the fleshy green husk (wear gloves, it permanently stains the skin) then dry the nuts for 2-3 weeks before cracking them — a tough job that requires a sturdy tool (vice, hammer) due to the exceptional thickness and hardness of the shell; the kernels are eaten raw, roasted, or used in baking

💊 Healing with it

husk (green outer shell) and bark traditionally used as a dewormer and in antifungal skin tinctures; leaves used as tea for digestive purposes

Level of evidence : traditional use — Morton Arboretum — Black Walnut Toxicity

⚠️ black walnut produces juglone, an allelopathic compound toxic to many plants growing near its roots (especially tomatoes) and to horses upon contact with its wood sawdust or shavings (foundering) — this toxicity affects the environment and certain animals, not human consumption of the kernel itself, which is completely safe

🪓 Other bushcraft uses

• dark brown wood, among the most sought-after in the world for woodworking and precision rifle stocks
• green husk used as a traditional, durable brown dye
• crushed shells used as an industrial abrasive