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A picture of a Bladder fern

Bladder fern

Cystopteris spp.

Cystopteris dickieana by Adrian Tync (CC BY-SA 4.0)

Partial Shade
Moderate watering
Frost Hardy


USDA zone


Minimum temperature

Expected size




More images of Bladder fern

A photo of Bladder fern

Bladder fern Overview

Genus with around 26 hardy, deciduous, rhizomatous perennials commonly referred to as bladderferns or fragile ferns. Species in this genus vary in their appearance and these differences may be accentuated in extreme environmental conditions. Foliage is attractive and possesses typical pinnate fern divisions with clusters of prominent sporangia, termed sori arranged on the undersides. Characteristic to this genus is the presence of a hooded bladder-like membrane covering the sori. They readily hybridise in nature, making individual species identification complex.

How to propagate Bladder fern


Division in spring, by spores in summer.



Bulbs when available.

Other uses of Bladder fern

Rock garden