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Blechnum penna-marina

Common name: Alpine Water Fern

You will bring a touch of the Mediterranean in your garden with this evergreen fern.

-5 to -10°C

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9cm Pots

	1 for £15.00	just £15.00 each
	3 for £22.00	just £7.33 each
	5 for £34.00	just £6.80 each

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In Stock Dispatched by 12/09/2025

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Blechnum penna-marina is an attractive evergreen, fronded fern that forms a lush mat, with a spreading habit which will create fantastic weed-suppressing and moisture retentive groundcover. Young new fronds emerge a rich coppery-red in the spring becoming green as they mature. Deer and rabbit resistant, this evergreen perennial is native to Chile and other areas of central America. Commonly known as the Alpine Water Fern, Blechnum penna-marina will fill crevices and cracks as it spreads, carpeting and softening hard landscaping. Given the RHS Award of Garden Merit for outstanding garden performance, it also loves being in a shady container. Blechnum penna-marina prefers to be grown in moist, acidic soil in full or partial shade, where it will grow to a height of 30cm, spreading to around 1m. With an RHS hardiness rating of H4, Blechnum may require winter protection should the temperature dip below -10 C.

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Key Information

Latin Name	Blechnum penna-marina 9cm pot
Common Name	Alpine Water Fern
Hardiness	H4 (-5 to -10°C)
Type	Perennial
Format	9cm Pots
Position	Full-Shade, Full-Sun, Part-Shade, Part-Sun
Foliage	Evergreen
Height in Maturity (m)	0.30 m
Spread in Maturity (m)	1.00
Soil Conditions	Loam Sand
Soil Acidity	Acid Neutral
Aspect	East-facing, South-facing, West-facing
Good for pots	Yes
Good for hanging baskets	Yes
Good for Rockeries	Yes