Polystichum aculeatum

Hard Shield Fern

Size

Max Height

0.5 m — 1.0 m

Max Spread

0.5 m — 1.0 m

Growth Habit

Densely branched plant with compact, leafy, rounded overall shape.

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 Shade 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.

North East

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.

(< −20 °C) Extremely 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.

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

Containers
Rockeries
Patios / Courtyards
Coastal Areas
Underplanting
Flower Borders

Merits

Generally pest-free
Low Maintenance
RHS | Award Of Garden Merit

Polystichum aculeatum

Hard Shield Fern

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Polystichum aculeatum

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