PlantFun
Plant Needs
Sunlight
Full sun to partial shade; tolerates coastal wind exposure and mild drought once established
Watering
Water deeply during prolonged dry spells; mature trees are highly drought-tolerant
Temperature
Hardy to -15°C; thrives in temperate climates, avoids prolonged extreme heat above 38°C
Characteristics
- Leaf: Oblong-lanceolate with sharply serrated margins; glossy dark green foliage turning yellow-brown in autumn
- Flower: Long drooping creamy-yellow male catkins, with small female flower clusters at the base
- Fruit: Spiny green cupules that split in autumn to reveal 1–3 edible brown nuts
Care Guide
Watering
Water young trees weekly during dry periods; mature trees need only occasional deep watering
Fertilization
Apply balanced slow-release fertilizer once in early spring. Focus on phosphorus-rich fertilizer to support nut development
Eggshell powder topdressing：Crush dried eggshells into fine powder; sprinkle 1–2 tbsp around the base of young trees, avoiding direct contact with the trunk to prevent pest attractionPruning
- Remove dead, damaged, or crossing branches in late winter to maintain canopy structure
- Thin dense inner branches to improve air circulation and sunlight penetration for nut production
- Shape young trees to establish a strong central leader for stable growth
Toxicity
Warning: this plant may be toxic.
Pets & Humans
Pets: ASPCA: Non-toxic to cats; no adverse effects from ingestion
Humans: No known toxicity to humans; nuts are edible when cooked
Garden Uses & Culture
Culture: Symbol of longevity and sustenance in European folklore; associated with autumn harvest festivals
Usage: Edible cooked nuts; durable timber for furniture, fencing, and construction
