Polystichum munitum is an evergreen outdoor fern native to the forests of western North America. This strong and robust fern is cherished for its elegant, dark green, sword-shaped fronds and its ability to provide structure and year-round greenery in the garden—even during winter. Ideal for shady spots, woodland gardens, or as ground cover beneath trees and shrubs.
Key Features
  
Botanical name: Polystichum munitum
  
Common name: Sword Fern / Western Sword Fern
  
Hardiness: Yes, down to approximately -20°C (-4°F)
  
Evergreen: Yes
  
Light requirements: Partial shade to full shade
  
Mature height: 60 – 100 cm (24 – 40 inches)
  
Mature width: 60 – 90 cm (24 – 36 inches)
  
Growth habit: Clump-forming, bushy growth
  
Soil: Well-drained, humus-rich, moist but not waterlogged
Why Choose the Sword Fern?
The sword fern is an excellent choice for anyone looking for a low-maintenance, evergreen fern that adds structure and texture to the garden throughout the year. Its fronds are graceful and glossy, unfurling beautifully in spring. A true eye-catcher in shade gardens, fern collections, or as part of a woodland planting scheme.

Thanks to its origins in moist, cool forests, this fern also thrives in Northern European climates—provided the soil remains rich in organic matter and consistently moist. Pruning is minimal: simply remove old fronds in spring to make room for fresh new growth.
Eco-friendly and Wildlife-friendly
Polystichum munitum offers shelter for insects and small animals. While it doesn’t produce flowers and won’t attract pollinators like bees, it's an ideal choice for gardeners aiming to create a natural, biodiverse garden environment.
Care Tips
  
Watering: Keep soil evenly moist, especially during warm periods.
  
Soil improvement: Mix compost or leaf mold into the soil to enrich it.
  
Best planting time: Spring or autumn are ideal seasons for planting.