Autumn Fern

Autumn Fern, or Dryopteris erythrosora, is a hardy, evergreen to semi-evergreen fern prized for its coppery-red young fronds that mature to glossy green, providing year round structure and colour.

Seasonal care is essential to maintain healthy fronds, vibrant colour, and long-term performance. Below is a complete seasonal care guide for Autumn Fern throughout the year.

Spring

Pruning and Maintenance

In early spring, remove any old, damaged, or weathered fronds from the previous year using clean, sharp secateurs. This allows fresh new fronds to emerge and keeps the plant looking neat.

Feed

Apply a balanced, slow-release fertiliser or a mulch of well-rotted compost in spring. This supports healthy new growth and enhances frond colour.

Dividing (if necessary)

Every 4–5 years, Autumn Fern can be divided in spring if clumps become overcrowded. Carefully lift the plant, divide into sections with healthy roots, and replant into moist, well-drained soil.

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Begin regular watering as temperatures rise, keeping the soil consistently moist but not waterlogged

Summer

Pruning and Maintenance

Minimal pruning is required in summer. Remove any damaged or yellowing fronds to maintain a tidy appearance and improve air circulation

Mulching

Apply a 2 to 3-inch layer of organic mulch such as bark or compost around the base of the plant. This helps retain moisture, suppress weeds, and keep roots cool during warm weather.

Watering

Autumn Fern prefers consistently moist soil. Water regularly during dry spells, especially for newly planted specimens. Avoid allowing the soil to dry out completely.

Autumn

Pruning and Maintenance

Enjoy the fresh copper and bronze tones of new fronds that often appear in autumn. Remove any tired or damaged foliage as needed, but avoid heavy pruning.

Protection from frost

Top up mulch around the base of the plant to protect roots and maintain soil moisture as temperatures fall.

Winter

Protection from frost

Autumn Fern is hardy and generally requires little winter protection. In colder or exposed areas, a layer of mulch helps shield the crown from severe frost.

Pest and disease prevention

Pests and diseases are uncommon in winter, but check for slug or snail activity and remove any decaying foliage to prevent problems.

Plant SOS

Browning fronds – A sign of dry soil or sun exposure. Increase watering and move to partial or full shade.

Yellowing fronds – A sign of poor drainage or waterlogged soil. Improve drainage and reduce watering.

Sparse growth – A sign of low nutrients or overcrowding. Apply organic matter and divide mature clumps if necessary.

Crisp leaf edges – A sign of drought stress or dry air. Maintain consistent soil moisture and mulch well.

Faded colour – A sign of too much direct sunlight. Move to a shadier position.

Holes in leaves – A sign of slug and snail damage. Use Slug and Snail repellent