PlantFun
Plant Needs
Sunlight
Full sun exposure is ideal; tolerates partial shade but reduces acorn production and growth rate
Watering
Deep, infrequent watering to encourage deep root growth; drought-tolerant once established, avoid overwatering
Temperature
Hardy to -20°C; avoid extreme heat stress with adequate soil moisture in summer
Characteristics
- Leaf: Obovate, shallowly lobed glossy green foliage, paler undersides, turns yellow-brown in fall
- Flower: Male catkins droop in clusters; female flowers are small reddish spikes near branch tips
- Stem/Bark: Gray-brown bark, deeply furrowed with mature growth; young stems are smooth and greenish-brown
Care Guide
Watering
Deep watering every 7–10 days during dry spells
Fertilization
Apply slow-release granular fertilizer once. Use a balanced, slow-release fertilizer formulated for hardwood trees in early spring
Banana peel compost tea：Compost banana peels for 2–3 weeks, steep in water for 24 hours, dilute 1:20 for root drench to support leaf and acorn developmentPruning
- Remove dead, damaged, or diseased branches during late winter dormancy
- Thin crowded inner branches to improve air circulation and light penetration
- Avoid heavy pruning in spring to prevent excessive sap loss and disease vulnerability
- Trim low-hanging branches to clear walkways or improve clearance as needed
Toxicity
Warning: this plant may be toxic.
Pets & Humans
Pets: ASPCA confirmed toxic; tannins can cause vomiting, diarrhea, and lethargy if ingested
Humans: Ingestion of large quantities of acorns or leaves may cause mild gastrointestinal upset due to tannin content
Garden Uses & Culture
Culture: Symbolizes strength and longevity in North American folklore; used in reforestation projects
Usage: Shade tree, wildlife habitat (acorns feed birds and mammals), wood for construction and fuel
