Corylus avellana

Hazel

Corylus avellana (Common Hazel) is a large deciduous shrub or small tree with rounded green leaves that turn yellow in autumn. Yellow catkins appear in early spring, followed by clusters of edible nuts in autumn. A versatile species for hedging, coppicing, and wildlife planting, it is a familiar and useful feature in Irish gardens.

Flowering Months

Jan J

Feb F

Mar M

Apr A

May M

Jun J

Jul J

Aug A

Sep S

Oct O

Nov N

Dec D

Size

Max Height

4.0 m — 8.0 m

Max Spread

4.0 m — 8.0 m

Growth Habit

Widely extends outward with many lateral branches from center.

Planting Position

Sunlight i Indicates how much direct sunlight the plant needs each day. Full sun means 6+ hours, part shade is filtered or morning sun, and full shade is little to no direct sun.

Full Sun Part Shade

Aspect i Aspect refers to the direction the planting spot faces (north, south, east or west). It affects light levels, warmth and exposure.

South East West

Exposure i Exposure describes how sheltered or exposed a plant’s position is, particularly to wind and weather.

Exposed / Sheltered

Hardiness i Hardiness indicates how well a plant tolerates cold conditions outdoors. Higher ratings generally mean greater frost tolerance.

(−20 to −15 °C) Very cold-hardy

Ideal Soil Conditions

Soil Type i Soil type describes the texture of the soil (clay, sand, loam, chalk). This affects drainage, nutrients and how roots grow.

Chalk Loam Sand

Soil Moisture i Soil moisture tells you how wet or dry the soil should be for best growth. Match this to your garden conditions for healthier plants.

Moist but permeable / Free draining

Soil pH i Soil pH measures how acidic or alkaline the soil is. It affects nutrient availability and can impact plant growth.

Alkaline Neutral

Plant Uses & Merits

Uses

Hedging / Screening

Corylus avellana

Hazel

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Corylus avellana

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