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Oak Fern

Gymnocarpium

Also called Oak Ferns, Oakfern

Oak Fern
Photo: by Thomas Moore ; edited by John Lindley ; nature-printed by Henry Bradbury., Public domain

Gymnocarpium is a small genus of woodland ferns called oak ferns, with slender creeping rhizomes and thin-textured fronds. They suit shaded, humus-rich, moist spots in a garden or woodland setting.

Family
Cystopteridaceae (Cystopterid family)
Grows as
Fern
Light
Part shade, Shade
Water
Keep the soil consistently moist but not waterlogged, especially in the growing season.
Soil
Humus-rich, moist, well-drained woodland mix with leaf mould.
Temperature
Hardy in cool temperate climates, roughly down to -30 °C; avoid prolonged heat above about 27 °C.
How easy
Moderate

About

Gymnocarpium is a small genus of ferns, called oak ferns. It was once placed with various other groups, including the dryopteroid ferns and the athyrioid ferns. Cladistic analysis has demonstrated that Gymnocarpium and Cystopteris form a natural but relatively primitive clade that is basal to the asplenioid, thelypterioid, and athyrioid ferns comprehensively.

Gymnocarpium sori are small, round and naked. These ferns generally have a slender, creeping rhizome under the surface of the ground, and fairly thin-textured fronds.

Other Gymnocarpium plants

Western oakfern · Gymnocarpium oyamense

Text excerpted from the Wikipedia article Gymnocarpium by its contributors, under CC BY-SA 4.0; the excerpts and the care summary drawn from them are shared under the same licence.

The care summary was written by AI (Claude, Anthropic) from the sources on this page, with general growing knowledge where they are silent. Check before relying on it.

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