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Gleichenia dicarpa

Gleichenia dicarpa · Gleicheniaceae

The gardener's calendar

The right move for September

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

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ID card

Foliage
Evergreen
Type
Fern
Adult size
0.5 to 1.5 m tall
Growth
Slow to moderate
Hardiness
Tropical to subtropical (minimum 10-15 °C)
Origin
Tropical and subtropical regions (Asia, Australia, Africa)
Exposure
Partial shade to light shade
Soil
Well-draining, rich in organic matter, slightly acidic

Care

Watering

Keep the substrate moist but never waterlogged, as Gleichenia hates root asphyxiation. Water regularly during the growing season (spring-summer), reducing slightly in autumn-winter. Rainwater or filtered water is ideal for this fern, which is sensitive to water quality.

Light exposure

Place your Gleichenia dicarpa in partial shade or light shade, away from direct sunlight which would scorch its delicate fronds. A location with indirect, airy light promotes harmonious growth. Avoid drying draughts.

Pruning and maintenance

Regularly remove dead, damaged or yellowed fronds at the base of the plant to encourage air circulation. No drastic pruning is necessary; this fern unfurls naturally. Gentle cleaning of the fronds (with a damp cloth) keeps it in good health.

Fertilizer

Apply a balanced, diluted fertilizer every 4 to 6 weeks during the growing season (spring-summer). Prefer light feeding rather than excessive amounts, as ferns are sensitive to mineral salt accumulation. Stop feeding in autumn-winter.

Soil and substrate

Use a very well-draining mix, made up of peat (or coco fibre), perlite and leaf mould or fine bark. Ensure no water stagnates at the bottom of the pot; perfect drainage is crucial to prevent root rot.

Diseases and pests

Watch out for spider mites and mealybugs, which can colonize dried fronds. Mist regularly with fine water to increase humidity and prevent these pests. Root rot appears with overwatering: ensure impeccable drainage and adequate ventilation.

Did you know?

Gleichenia dicarpa is one of the oldest living ferns, belonging to a lineage virtually unchanged since the Jurassic (over 180 million years ago). Its dichotomously branched fronds (hence its scientific name 'dicarpa') give it a prehistoric appearance, so it's sometimes cultivated by enthusiasts of 'living fossil' plants.

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.