interrupted fern (Osmunda claytoniana) plant — close-up photo
Easy to grow

interrupted fern

Osmunda claytoniana

Overview

The interrupted fern (Osmunda claytoniana) is a distinctive and elegant fern found in moist woodlands. The large bright green fronds are bipinnate, meaning they have many leaflets that are divided twice, giving the fern its name and unique appearance. On top of each frond emerging from the center are fertile tip clusters that create a distinctive 'thimble' look. They are easy to grow and prefer moist soil and partial shade. With broad, attractive foliage, interrupted fern is an attractive addition for forests, shady borders, woodsy rock-gardens. The spectacular fronds last through the winter, adding winter interest to the garden.

Care Guide

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Watering

Frequent

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Light

Part shade, full shade.

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Soil

Sandy Loamy Humus

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Temperature

Hardiness zone 3-8.

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Pruning

Best pruned in February, March, April, June, July, August, May.

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Propagation

Rhizome Propagation, Spore Propagation, Crown Division, Stem Propagation

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