PlantFun
Plant Needs
Sunlight
Requires full sun for optimal nut production; tolerates partial shade in hot, arid regions
Watering
Water deeply during prolonged dry spells; avoid overwatering to prevent root rot in poorly drained soil
Temperature
Hardy to -15°C; thrives in temperate climates, avoid sustained temperatures above 38°C
Characteristics
- Leaf: Pinnately compound with 5–9 oval leaflets, glossy dark green, turning yellow in autumn
- Flower: Monoecious; long drooping male catkins and small green female flower clusters
- Fruit: Round green husk enclosing a hard-shelled walnut, maturing in late autumn
Care Guide
Watering
Water deeply every 7–10 days during active growth and nut development
Fertilization
Apply balanced slow-release fertilizer in early spring. Supplement with potassium-rich feed to support fruit formation
Composted banana peel tea：Fully compost banana peels, steep in water for 3 days, dilute 1:20 with water for root drench to promote nut developmentPruning
- Remove dead, diseased, or crossing branches in late winter before new growth emerges
- Thin crowded inner branches to improve air circulation and sunlight penetration
- Trim low-hanging branches to simplify nut harvesting and reduce pest hiding spots
Toxicity
Warning: this plant may be toxic.
Pets & Humans
Pets: ASPCA: Moldy walnuts contain tremorgenic mycotoxins that can cause neurological issues; fresh nuts may induce gastrointestinal upset
Humans: Ripe walnuts are safe for consumption; green husks may cause mild skin irritation on contact
Garden Uses & Culture
Culture: Symbolizes wisdom and prosperity in some European and Middle Eastern cultural traditions
Usage: Edible nuts for culinary use; durable wood for furniture and cabinetry; ornamental shade tree
