PlantFun
Plant Needs
Characteristics
- Leaf: Large obovate leaves with deep, rounded lobes; velvety undersides when young
- Flower: Inconspicuous yellow-green male catkins and small red female spikes
- Bark: Gray-brown, furrowed with age; rough, textured surface
Care Guide
Deep watering every 7–10 days during dry spells; maintain consistent moisture for young saplings
Apply balanced slow-release fertilizer once in early spring to support new growth. Use fertilizer with equal nitrogen, phosphorus, and potassium ratios to promote healthy canopy and root development
Composted eggshell powder + coffee grounds：Mix fully composted coffee grounds with crushed, baked eggshell powder; work into the top 5 cm of soil in early spring to improve soil structure and add mild nutrients without risking tannin accumulation- Remove dead, damaged, or crossing branches in late winter to early spring before new growth emerges
- Thin dense canopy branches to improve airflow and light penetration throughout the tree
- Trim suckers growing at the base of the trunk to direct energy to the main tree growth
- Avoid heavy pruning, as oak trees heal slowly and are susceptible to disease if over-pruned
Toxicity
Warning: this plant may be toxic.
Pets: ASPCA-listed toxic; tannins may cause vomiting, diarrhea, lethargy, and loss of appetite
Humans: Contains tannins; ingestion of large quantities of acorns or leaves may cause stomach upset, nausea, or abdominal pain
Garden Uses & Culture
Culture: In Japanese garden design, it symbolizes strength, longevity, and natural resilience
Usage: Ornamental shade tree for large gardens and parks; acorns provide food for native wildlife including birds and small mammals
