PlantFun
Plant Needs
Characteristics
- Leaf: Thick, leathery, oblong to elliptical leaves with serrated margins; glossy dark green upper surface, pale green underside
- Flower: Inconspicuous yellow-green catkins; male and female flowers on separate catkins
- Fruit: Oval acorns with scaly cups, maturing over 18 months
- Stem/Bark: Gray-brown bark with shallow furrows as it matures
Care Guide
Deep water every 7–10 days during dry periods; apply mulch to retain soil moisture
Apply balanced slow-release fertilizer once at bud break. Use low-nitrogen fertilizer to promote healthy foliage and acorn development without excessive vegetative growth
Eggshell powder topdress：Crush dried eggshells into fine powder; sprinkle 1–2 tbsp around the base of the tree and water in lightly to avoid runoff- Remove dead, damaged, or crossing branches in late winter to improve airflow and canopy structure
- Thin overcrowded inner branches to allow sunlight penetration to lower foliage
- Avoid heavy pruning, as oak trees heal slowly; limit cuts to necessary maintenance only
Toxicity
Warning: this plant may be toxic.
Pets: ASPCA: Toxic due to tannins; may cause gastrointestinal upset and potential kidney damage in severe cases
Humans: Ingestion of large quantities of raw acorns can cause gastrointestinal upset; properly leached acorns are safe in small amounts
Garden Uses & Culture
Culture: Symbolizes strength and longevity; often used in wildlife gardens to provide shelter and food for birds and small mammals
Usage: Ornamental shade tree for residential and public landscapes; acorns serve as a food source for wildlife
