GardenWizzPlant Care Card

English Oak

Quercus robur · Tree

Hardiness
H6 Very hardy (RHS profile linked: −20 to −15°C)
Position
Full sun
Height × Spread
20–40 m × 15–25 m
Soil
Deep, moist but well-drained fertile soils; lime tolerant. Dislikes waterlogged soil.
Flowering
May–May
Toxicity
Harmful if eaten by pets (dogs)

The Gardening Year

J
F
M
A
M
J
J
A
S
O
N
D
🌱 Sow
🪴 Plant out
🌸 In flower

Watch out for

Acute Oak Decline: Report suspected cases to the Tree Health Diagnostic Advisory Service for investigation.

Oak Processionary Moth: Avoid disturbing nests due to toxic hairs; seek professional removal advice.

Honey Fungus: Improve drainage and avoid root damage; consult an arborist for severe infections.

Powdery Mildew: Ensure good air circulation and avoid overhead watering to reduce humidity around foliage.

Oak Gall Wasps: Generally harmless; remove affected branches only if aesthetically undesirable.

Full guide: gardenwizz.com/plants/english-oak© GardenWizz — UK gardening encyclopedia