Japanese Lacquer Tree (Rhus verniciflua)

Japanese Lacquer Tree

Rhus verniciflua

Its sap holds ancient craft and hidden hazard. Deciduous hardwood tree; common name: Japanese Lacquer Tree.

Full sun
1–2/week
Moderate
🌱

Plant Needs

☀️
Sunlight Prefers full sun to partial shade; tolerates light shade but produces less sap for traditional lacquer production
💧
Watering Water deeply and allow the top 15–20 cm of soil to dry between waterings; drought-tolerant once fully established
🌡️
Temperature Hardy to cold temperatures down to -10°C; avoids prolonged extreme heat above 35°C to prevent leaf scorch
🔍

Characteristics

  • Leaf: Pinnately compound leaves with 7–19 glossy green leaflets, turning vibrant red in autumn
  • Flower: Small, pale yellow, fragrant blooms clustered in axillary panicles
  • Bark: Gray-brown, smooth when young, developing shallow fissures as the tree matures
🛠️

Care Guide

Watering

Keep soil consistently moist during active growth periods

Fertilization

Apply balanced diluted fertilizer once monthly. Discontinue fertilization in autumn and winter to support dormancy

Banana peel tea:Soak 2–3 chopped banana peels in 4 liters of water for 3 days; strain solids and dilute 1:20 before drenching soil to avoid odor and pest issues
Pruning
  • Remove dead, damaged, or crossing branches in late winter before new growth emerges
  • Thin crowded branches to improve airflow and light penetration throughout the canopy
  • Avoid pruning during spring sap flow to minimize urushiol exposure risk
⚠️

Toxicity

Warning: this plant may be toxic.

Pets & Humans

Pets: ASPCA: Toxic; contact or ingestion may cause skin irritation, vomiting, and oral pain

Humans: Contains urushiol resin; direct contact causes severe allergic contact dermatitis; ingestion may lead to gastrointestinal distress

📖

Garden Uses & Culture

Culture: Used for over 3,000 years in East Asia to produce durable, high-gloss traditional lacquerware

Usage: Lacquer production for decorative crafts, ornamental shade tree in temperate gardens