Foeniculum vulgare

Common Fennel

Common fennel, Foeniculum vulgare, is a tall, aromatic perennial with feathery green leaves and a strong aniseed scent. In summer it produces umbels of small yellow flowers, followed by seed heads that can be cut for drying. With its upright, clump-forming habit and fragrant foliage, it adds height and texture to borders in Irish gardens. It is also loved by pollinators and useful for cut flowers.

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

1.5 m — 2.5 m

Max Spread

0.1 m — 0.5 m

Growth Habit

Densely branched plant with compact, leafy, rounded overall shape., Grows in tight bunches from base, forming rounded groups.

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

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

South West

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

Sheltered

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

(−15 to −10 °C) 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 Clay 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.

Acid Alkaline Neutral

Plant Uses & Merits

Uses

Architectural
Patios / Courtyards
Containers
Flower Borders

Merits

Fragrant
No pruning required
Loved By Pollinators
Good for Cut Flowers

Foeniculum vulgare

Common Fennel

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Foeniculum vulgare

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