Polypodiophyta Dryopteris affinis

Pot diameter 17cm

Care for Dryopteris affinis (Scaly Male Fern)

Dryopteris affinis is a robust and elegant fern that brings the atmosphere of a primeval forest to the garden or a cooler indoor space. Its firm, bipinnate leaves with characteristic golden-brown scales on the stipes are more resistant than those of other ferns, but still require a specific approach.

💧 Watering

Keep the substrate constantly slightly moist, but never waterlogged. Ferns do not tolerate complete drying out of the root ball, which leads to irreversible wilting of the leaves.

Sign: If the leaf tips start to brown and curl, the plant is suffering from drought.

Water: Soft, rainwater or stagnant water is best. Ferns are sensitive to calcium and chlorine in fresh tap water.

Note: Reduce watering slightly during winter, but do not let the substrate dry out completely.

☀️ Light

As a typical forest plant, it loves shade to partial shade. Direct sun is its biggest enemy, capable of burning its leaves in a single afternoon.

The ideal spot is a north-facing area or deeper shade under tree canopies or in a corner of a room.

It can tolerate deep shade where most other plants struggle. In bright indirect light, it grows faster, but the leaf color may be lighter.

🌡️ Temperature and Air

Hardiness: Dryopteris affinis is an outdoor, fully frost-hardy fern (in our conditions, it often overwinters as evergreen or semi-evergreen).

Air humidity: Requires high air humidity (above 60%). It will suffer in dry apartment air.

Tip: If growing in a pot, place it on a saucer with moist pebbles (leca) or near a water feature. It loves fine misting of its leaves.

🌿 Fertilizing

Ferns are less demanding in terms of nutrients than fast-growing Monstera. Too much fertilizer can burn their delicate roots.

Fertilize once a month from April to August.

Use half the dose of liquid fertilizer for green plants or a special fern fertilizer.

Do not fertilize at all in winter, as the plant is resting.

🧽 Substrate

It needs a humous, loose, and slightly acidic soil that retains moisture well but is also airy.

Ideal mix: Leaf mould (or peat), quality garden compost, and a little sand or perlite for lightening.

In heavy, clayey soil, there is a risk of rhizome rot, while in purely sandy soil, it dries out too quickly.