PlantFun
Plant Needs
Sunlight
Full sun exposure preferred; tolerates partial shade in extremely hot climates but requires unobstructed sunlight for optimal growth
Watering
Drought-tolerant; water deeply only during prolonged dry spells, avoid overwatering to prevent root rot
Temperature
Hardy to -10°C; tolerates high summer temperatures up to 38°C, with mulching to protect roots from extreme frost
Characteristics
- Leaf: Oblong to elliptical, 5–12 cm long, serrated margins, dark green upper surface, pale greyish-green underside
- Flower: Male catkins are yellowish-green, drooping; female flowers are small, reddish, clustered at twig bases
- Stem/Bark: Mature bark is thick, deeply furrowed, grey-brown; young twigs are pubescent
Care Guide
Watering
Water deeply once every 2–3 weeks during extended dry periods
Fertilization
Apply balanced slow-release fertilizer once in early spring. Avoid high-nitrogen fertilizers, which can promote weak, fire-prone growth
Eggshell powder topdressing：Crush dried eggshells into fine powder; sprinkle 1–2 tablespoons around the tree base in early spring, then water lightly to incorporate into soilPruning
- Remove dead, damaged, or crossing branches in late winter to improve airflow and reduce disease risk
- Thin overcrowded canopy branches to allow sunlight penetration to inner foliage
- Avoid heavy pruning, as oak trees heal slowly; limit cuts to necessary maintenance only
Toxicity
Warning: this plant may be toxic.
Pets & Humans
Pets: ASPCA: Toxic; tannins in acorns and leaves cause vomiting, diarrhea, abdominal pain, and potential kidney damage in severe cases
Humans: Contains tannins in acorns and leaves; large ingestion causes gastrointestinal upset including nausea and diarrhea
Garden Uses & Culture
Culture: N/A
Usage: Ornamental shade tree; wood used for fuel and traditional construction in native regions
