PlantFun
Plant Needs
Sunlight
Full sun to partial shade; thrives in open, sunny locations with minimal shade
Watering
Drought-tolerant once established; water deeply only during prolonged, severe dry spells
Temperature
Extremely cold-hardy; tolerates hot, dry summer conditions without significant stress
Characteristics
- Leaf: Oblong to lanceolate, serrated margins, yellow-green to dark green foliage turning yellow-brown in fall
- Flower: Male catkins are yellow-green; female flowers are small, reddish spikes
- Fruit: Small, sweet acorns with shallow cups; mature in one year
Care Guide
Watering
Water deeply every 2–3 weeks during extended dry periods
Fertilization
Apply slow-release balanced fertilizer once in early spring. Avoid over-fertilization to prevent excessive, weak foliage growth
Eggshell powder top-dressing：Crush dried eggshells into fine powder; sprinkle 1–2 tbsp around the base of the tree in early spring to boost soil calcium levelsPruning
- Remove dead, damaged, or crossing branches in late winter to early spring
- Thin crowded branches to improve air circulation and light penetration
- Avoid heavy pruning; maintain the tree's natural rounded canopy shape
Toxicity
Warning: this plant may be toxic.
Pets & Humans
Pets: ASPCA: Toxic; tannins may cause vomiting, diarrhea, abdominal pain, and potential kidney issues with large ingestion
Humans: Ingestion of acorns or leaves may cause mild gastrointestinal irritation due to tannin content
Garden Uses & Culture
Culture: Symbolizes strength and longevity in North American folklore
Usage: Ornamental shade tree; acorns provide food for wildlife including squirrels, deer, and birds
