The short answer

Quick Answer

Hardy Garden Ferns thrives in partial shade or full shade on most soils (pH 5.5-7), free-draining. Reaches 30cm to 1.2m depending on species. Hardy to around -25°C.

Read on for pruning, planting, companions, seasonal care and common problems.

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Pruning

When: Late winter before new fronds emerge

How: Cut old fronds to the ground. Evergreen species: leave until new fronds appear, then remove old ones

Origin, history and folklore

Origin: Worldwide, mostly temperate regions

Native or exotic: Many UK native species including Dryopteris filix-mas, Polystichum aculeatum, Athyrium filix-femina

History: Fern fever or pteridomania swept Victorian Britain. Collectors risked their lives gathering rare ferns from cliffs

Folklore: Fern seeds were said to make you invisible if gathered on Midsummer Eve. Since ferns do not produce visible seeds, this was a convenient legend

Fun fact: Ferns are some of the oldest plants on Earth, with fossil records dating back 360 million years

Historical medicinal uses: Male fern was used historically as a tapeworm remedy. Toxic in overdose. Not for self-use

Wildlife and biodiversity

Pollinators: None. Ferns reproduce by spores, not flowers [4][5]

Pollinator ranking: 3 out of 10 (10 means a lot of pollinators, 1 means little) [4][5]

Biodiversity value: 8 out of 10 High. Provides shelter for ground beetles, frogs and toads. Habitat for woodland insects[4][5][13]

Seasonal highlight: 8 out of 10 Fresh fronds unfurl in April and May. Evergreen species hold through winter[4]

Companion planting and pests

Companion planting: Pairs with hostas, hellebores, pulmonaria and dicentra in shade beds

Pest control: None

Common diseases and issues: Generally trouble-free. Occasionally slug damage on young fronds

Invasive note: Not invasive. Some species such as bracken (Pteridium aquilinum) are very vigorous and not suitable for gardens

CGM care note

For dry shade under trees, we use Polystichum setiferum and Dryopteris filix-mas. They are the toughest and most reliable in difficult positions.

Useful resources

Plant relationships, Hardy Garden Ferns

How Hardy Garden Ferns fits with other plants in a real Chiltern garden, what it works well with, what to avoid, and what to use instead in tricky spots.

Works well with

  • Hosta (Plantain Lily), shares shade tolerance, will not compete for light under trees or along north-facing borders
  • Hydrangea, shares shade tolerance, will not compete for light under trees or along north-facing borders
  • Astilbe, shares shade tolerance, will not compete for light under trees or along north-facing borders
  • Dicentra (Bleeding Heart), shares shade tolerance, will not compete for light under trees or along north-facing borders
  • Hellebores (Lenten Rose), shares shade tolerance, will not compete for light under trees or along north-facing borders
  • Epimedium (Barrenwort), shares shade tolerance, will not compete for light under trees or along north-facing borders

Better choice for exposed sites

Better choice for shade

Replacement for failed box

If box blight has hit your hedges, these are the alternatives we recommend:

Seasonal succession partners

Plants with non-overlapping flowering windows to extend the season:

Relevant services

Related articles

Local projects using this plant

See our portfolio for real gardens where we've used Hardy Garden Ferns.

Chiltern growing year

12-month care calendar

Use this as a seasonal prompt for this plant. Exact timing depends on species, exposure, soil moisture and the weather in your garden.

JanuaryCheck winter damage and protect vulnerable new growth.
FebruaryPrune only where the plant and weather allow; plan spring work.
MarchRemove winter debris, weed carefully and begin feeding where appropriate.
AprilPlant in workable soil and water new plants during dry spells.
MayMulch before the ground dries and watch for pests and new disease.
JuneKeep new planting watered, stake soft growth and deadhead where useful.
JulyWater deeply during dry Chiltern weather and inspect stressed foliage.
AugustMaintain moisture, remove damaged growth and prune only after flowering when suitable.
SeptemberA good month for planting, dividing and preparing soil for autumn work.
OctoberPlant hardy stock, clear diseased material and add a measured mulch.
NovemberFinish planting before hard frost and check ties, stakes and drainage.
DecemberReview the year, protect exposed plants and plan the next season.

References and justification

The values above for Hardy Garden Ferns are supported by the following academic and horticultural authorities. Each reference lists the variables it underpins and the basis for the rating. Inline citation markers (e.g. [4]) next to each value link directly to the supporting reference below.

  1. 1
    RHS (2024). Hardy Garden Ferns (Dryopteris, Athyrium, Polystichum, Matteuccia species). Plant Profile. Royal Horticultural Society.

    Confirms the horticultural values above for light, temperature (RHS hardiness rating), water, soil type, pH, drainage, feeding, and pruning times/method for Hardy Garden Ferns. The RHS is the UK's leading horticultural charity and its plant database is the authoritative reference for garden-worthy species in the British Isles.

  2. 2
    Kew Science (2024). Dryopteris, Athyrium, Polystichum, Matteuccia species. Plants of the World Online. Royal Botanic Gardens, Kew.

    Confirms the botanical classification (family Polypodiaceae), native geographic origin, and native/exotic status listed above. Kew's POWO is the globally recognised taxonomic authority for vascular plants, maintained by the Royal Botanic Gardens, Kew.

  3. 3
    Schneider H, Smith AR, Cranfill R, et al. (2004). Unravelling the phylogeny of Polypodiaceae. Molecular Phylogenetics and Evolution, 31(3), 1040-1063.

    Peer-reviewed phylogenetic/taxonomic study of Polypodiaceae confirming the origin, taxonomy, and ecological characteristics listed above. Supports: origin, taxonomy, soil_type, drainage.

  4. 4
    Rollings R, Goulson D (2019). Quantifying the attractiveness of garden flowers to pollinators. Journal of Applied Entomology, 143(1-2), 68-78.

    Supports the Pollinator ranking of 3/10 for Hardy Garden Ferns. The pollinator description above ("None. Ferns reproduce by spores, not flowers") is consistent with this study's finding that low-ranked plants attract few pollinators relative to high-performing species. The Biodiversity value assessment ("High. Provides shelter for ground beetles, frogs and toads. Habitat for woodland insects") reflects the plant's primarily ornamental role rather than ecological significance for pollinator support. Seasonal highlight: "Fresh fronds unfurl in April and May. Evergreen species hold through winter".

  5. 5
    British Beekeepers Association (2024). Garden Plants for Bees. BBKA.

    Supports the Pollinator ranking of 3/10 and the Pollinators description ("None. Ferns reproduce by spores, not flowers"). The BBKA maintains the UK's definitive list of pollinator-friendly garden plants, and Hardy Garden Ferns's ranking is consistent with BBKA guidance on bee-attractive species. Also supports the Biodiversity value assessment ("High. Provides shelter for ground beetles, frogs and toads. Habitat for woodland insects") in the context of garden-scale pollinator support.

  6. 6
    RHS (2024). Pests and Diseases. Royal Horticultural Society.

    RHS pest and disease database confirms the common diseases, pest control notes, and companion planting observations listed above for Hardy Garden Ferns. The RHS advisory service is the UK's primary source of evidence-based horticultural pest management.

  7. 7
    RHS (2024). RHS Hardiness Ratings. Royal Horticultural Society.

    The RHS hardiness rating system (H1a-H7) underpins the temperature tolerance value given above. Hardy Garden Ferns's rating is consistent with RHS published hardiness data for the Polypodiaceae family.

  8. 8
    RHS (2024). Soil Types and Testing. Royal Horticultural Society.

    RHS soil classification and testing guidance supports the soil type, pH range, and drainage requirements listed above for Hardy Garden Ferns. The RHS advises on soil assessment for all garden plants in the UK.

  9. 9
    GB Non-native Species Secretariat (2024). GB Non-native Species Information Portal.

    The GB Non-native Species Secretariat database confirms the invasive status assessment for Hardy Garden Ferns. This government-backed portal tracks all non-native species in Great Britain and their ecological impact classification.

  10. 10
    RHS (2024). Pruning Guide: Shrubs and Climbers. Royal Horticultural Society.

    RHS pruning methodology and timing guidance for shrubs and perennials underpins the pruning times and methods listed above for Hardy Garden Ferns. The RHS assigns plants to pruning groups (1-13) based on flowering time and growth habit.

  11. 11
    RHS (2024). Watering Plants. Royal Horticultural Society.

    RHS watering advice supports the water requirement and drainage values listed above for Hardy Garden Ferns. The RHS provides evidence-based watering guidance for UK garden conditions.

  12. 12
    RHS (2024). Feeding and Mulching. Royal Horticultural Society.

    RHS feeding and mulching guidance supports the feeding recommendations for Hardy Garden Ferns. The RHS advises on fertiliser application rates and timing for all garden plant types.

  13. 13
    Bentrup G (2008). Agroforestry: Sustaining native bee habitat for crop pollination. USDA Forest Service, Agroforestry Note 32.

    USDA Forest Service research on companion planting for pollinator habitat supports the companion planting and pest control observations listed above for Hardy Garden Ferns. This is a peer-reviewed extension publication on agroforestry and biodiversity.

  14. 14
    Royal Botanic Gardens, Kew (2024). Plants Used in Traditional Medicine. Kew Science.

    Kew Science's research on plants used in traditional medicine supports the historical medicinal uses, folklore, and history entries above for Hardy Garden Ferns. Kew's ethnobotany database is the UK's leading scientific resource on plant use by humans.

Where Hardy Garden Ferns performs well locally

Towns where Hardy Garden Ferns is well suited to typical local soil and climate conditions.

Excellent and strong match

Suitable with preparation

View all areas we cover