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Blechnum penna-marina

Alpine Water Fern

Blechnum penna-marina, also known as alpine water fern or alpine hard fern, is a compact native groundcover fern that spreads via creeping rhizomes. It forms a fine-textured mat of green fronds that turn bronze in cooler weather, making it ideal for shaded borders, rock gardens, and native underplantings. The Plant Company offers healthy, NZ-grown Blechnum penna-marina ferns perfect for softening garden edges and suppressing weeds in shaded areas.

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Blechnum penna-marina (Alpine Water Fern) is currently unavailable.

Why? Our plants are subject to seasonality and high-demand. Please contact us if you would like to know when it becomes available again.

Suited to regions:All regions
Plant type:Ferns
Height:20 cm
Spread:30 cm
Flowering time:
Tolerances:Shade
Garden uses:Borders, Containers, Paths & Steps, Ponds, Pool areas
Garden styles:Backyard, City & Courtyard, Frontyard, Modern, Native
Easy to grow?Yes
Maintenance requirementsLow
Growth rateMedium
Also known asAlpine Water Fern
Sku10815

Plant Size And Growth – Grows 15cm Tall x 1m Wide

This miniature fern grows to just 10–15 cm in height but spreads steadily to over a metre wide. Its delicate fronds create a finely textured carpet that fills gaps between pavers or along garden edges. Over time, it develops a soft and natural look, particularly when mass planted in damp, shaded environments.

Where To Grow Blechnum penna-marina In NZ

This fern thrives in part to full shade with moist, well-draining soil. It performs well in woodland gardens, under trees, or beside streams and prefers cool, sheltered locations. Blechnum penna-marina is also frost-hardy and tolerant of a range of soil types, making it highly adaptable to NZ’s varied growing conditions.

Why Blechnum penna-marina Is Ideal For NZ Gardens

This fern is excellent for low-maintenance landscaping, particularly where groundcover is needed in difficult shady spots. It’s also a favourite for use between stepping stones and as a soft edging plant. Its seasonal colour change adds interest, and its compact growth habit ensures it stays neat without overtaking other plants.

Why Buy Blechnum penna-marina From The Plant Company?

Our ferns are NZ-grown and selected for health, vigour, and garden success. Each plant is carefully packed and shipped nationwide, ensuring it arrives ready to thrive. We stand behind our plants with quality assurance and offer expert support to help you create a thriving, fern-filled garden.

Questions and Answers

Have a question about Blechnum penna-marina (Alpine Water Fern)? We are here to help.

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