GardenWizzPlant Care Card

Common Hazel

Corylus avellana · Shrub

Hardiness
H6 Hardy — very cold winter (to −15 to −20°C)
Position
Full sun, Partial shade
Height × Spread
3–8 m × —
Soil
Moist but well-drained, fertile soil; ideal for chalky soils. Dislikes waterlogged soils.
Flowering
March–May
Toxicity
No specific toxicity is listed by the RHS. This is not a guarantee of safety — check with a vet or the ASPCA before pets or children eat any plant.

The Gardening Year

J
F
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A
M
J
J
A
S
O
N
D
🌸 In flower

Watch out for

Powdery mildew: Improve air circulation by thinning the canopy and apply a fungicide if infection is severe.

Honey fungus: Remove infected roots and replace soil, as there is no chemical cure for established infection.

Silver leaf: Prune out affected branches well below the visible symptoms and burn them immediately.

Aphids: Encourage natural predators like ladybirds or use a strong jet of water to dislodge them.

Gall mites: Prune out severely affected growth in winter to reduce populations before they spread.

Full guide: gardenwizz.com/plants/common-hazel © GardenWizz — UK gardening encyclopedia