PlantFun
Plant Needs
Sunlight
Full sun to partial shade; young trees tolerate brief shade but require direct sun for optimal canopy development
Watering
Water deeply and infrequently; allow topsoil to dry between waterings, with reduced frequency for mature drought-tolerant trees
Temperature
Hardy to -30°C; tolerates summer temperatures up to 35°C; avoid sudden extreme temperature shifts
Characteristics
- Leaf: Lobed, 10–20 cm long; dark green in summer, turning bright red in autumn
- Flower: Inconspicuous male catkins and small female spikes; wind-pollinated
- Bark: Young bark is smooth gray; mature bark develops deep ridges and furrows with reddish inner layers
Care Guide
Watering
Deep water every 7–10 days during dry spells
Fertilization
Apply balanced slow-release fertilizer once in early spring. Use fertilizer with equal nitrogen, phosphorus, and potassium for healthy root and canopy growth
Eggshell powder topdress：Crush dried eggshells into fine powder; sprinkle lightly around the tree base and water in to release calcium graduallyPruning
- Remove dead, damaged, or crossing branches in late winter to early spring
- Thin crowded branches to improve airflow and sunlight penetration
- Avoid heavy pruning, as oak trees heal slowly; limit cuts to necessary maintenance
Toxicity
Warning: this plant may be toxic.
Pets & Humans
Pets: ASPCA: Toxic; tannins cause gastrointestinal irritation and potential organ damage with prolonged exposure
Humans: Ingestion of large amounts of acorns or leaves may cause mild gastrointestinal upset
Garden Uses & Culture
Culture: Symbolizes strength and endurance in North American folklore
Usage: Ornamental shade tree; high-quality timber for furniture and flooring
