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Athyrium angustum

Athyrium angustum · Athyriaceae

The gardener's calendar

The right move for September

Ideal time to plant athyrium angustum: set it out when the soil is neither frozen nor waterlogged, and water generously as it establishes.

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ID card

Foliage
Deciduous
Adult size
30 to 60 cm in height
Growth
Moderate
Hardiness
Very hardy (down to -15°C)
Origin
Southeast Asia and temperate regions
Soil type
Humus-rich, well-drained, slightly acidic

Care

Watering

Keep the substrate constantly moist without waterlogging. Water regularly during the growing period, especially in hot or dry weather. In winter, reduce watering while maintaining slight moisture. Prefer a relatively humid ambient environment, beneficial for this fern.

Light Exposure

Place the fern in partial shade or dappled shade, away from direct sunlight which burns the fronds. It tolerates shaded areas of the garden or indoors well, near a window without direct sun. Avoid locations that are too dark, as they slow growth.

Soil and Substrate

Use a mixture rich in organic matter (potting soil, compost, peat or alternatives) with good permeability. Ensure adequate drainage to prevent rhizome rot. A slightly acidic pH is ideal for this species.

Cleaning and Pruning

Regularly remove dead, yellowing or damaged fronds at the base to encourage vigor. Cut winter fronds after frost to make room for young spring fronds. Clean up debris to prevent fungal diseases.

Fertilizer and Feeding

Apply balanced diluted fertilizer every 15 days during the growing season (spring-summer). Prefer mild or fern-specific fertilizers to avoid overloading the plant. In autumn-winter, cease fertilization.

Diseases and Pests

Watch for mealybugs and spider mites indoors, especially if air is too dry. Fungal diseases (rust, brown spots) appear with excess moisture or poor air circulation. Improve ventilation and avoid wetting foliage late in the day.

Did you know?

Athyrium angustum belongs to the group of narrow-fronded ferns highly valued in shade gardening. Unlike flowering plants, ferns reproduce through microscopic spores produced on the underside of fronds, which has fascinated botanists since antiquity and has long fueled popular legends about their 'mysterious' reproduction.

Where to buy it

Plant in spring or early autumn, avoiding spells of intense heat. Pick a plant with healthy foliage and roots that are not exposed. Best time: March, April, May, September.

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Tips generated and checked by Viridia — adapt them to your local climate.