Domakihub How to Grow a Fern and Keep It Lush All Year
From choosing the right spot to watering and feeding, everything your fern needs to thrive indoors or out.
Reviewed by Domakihub garden pros · 2026-06-23 · 5 min read
Ferns bring effortless, year-round greenery to shaded corners, balconies, and entrance halls — exactly the kind of low-maintenance beauty that works equally well in a permanent home, a holiday rental, or a hotel lobby in Greece. The video above walks through the essentials of fern care, and the steps below give you everything you need to plant, water, feed, and maintain yours with confidence. Whether you are growing a Boston fern on a terrace in Athens or a hardy sword fern in a Cretan garden, the principles are the same.
Why Ferns Work So Well in Greece
Greece's mild winters and humid coastal air create surprisingly good conditions for many fern species. The main challenge is the dry, hot summer — but that is easily solved by choosing a shaded spot and watering consistently. Varieties such as the Boston fern (Nephrolepis exaltata), the maidenhair fern (Adiantum), and the native Dryopteris all tolerate Mediterranean conditions when sited correctly.
For holiday rentals and hotels, ferns earn their keep because they need no flowering cycle, look presentable twelve months of the year, and can be divided into new plants for free whenever a pot gets too crowded — making them one of the most cost-effective garden investments available.
Choosing the Right Fern for Your Space
Indoor ferns prefer filtered light — a bathroom with a north-facing window or a shaded kitchen shelf is ideal. Outdoor ferns do best on north- or east-facing walls where they receive bright indirect light in the morning and shade during the harshest afternoon hours. Avoid placing any fern where direct summer sun will hit the fronds for more than an hour a day; scorching is the single most common mistake.
If you are planting in a garden bed rather than a pot, ferns are excellent companions for other shade-loving plants such as hostas and hellebores. In a pot, choose a container that is only slightly larger than the root ball — ferns actually prefer to be a little snug.
How to Grow a Fern: 5 Key Steps
- 1
Prepare the right soil mix
Ferns demand loose, moisture-retaining, yet well-draining soil. Mix two parts standard potting compost with one part perlite or coarse sand and one part peat-free coir. This combination holds enough moisture between waterings while preventing the soggy roots that kill more ferns than any other single cause. For garden beds, work in a generous layer of leaf mould or composted bark before planting.
- 2
Plant at the correct depth and position
Set the crown of the fern — the point where fronds emerge from the root mass — at or just above soil level, never buried. Backfill gently, firm the soil without compacting it, and water thoroughly straight after planting. Site your pot or bed where the fern will receive bright indirect light only; dappled shade under a pergola or beneath a large tree is ideal for most outdoor varieties in Greece.
- 3
Water consistently, never erratically
Ferns want the soil to stay evenly moist at all times — not waterlogged, not bone dry. In summer, indoor ferns in pots typically need watering every two to three days; outdoor ferns in the ground may need daily watering during a heat wave. Check the top centimetre of compost with your finger: if it feels dry, water immediately. In winter, reduce frequency to once a week or less and ensure pots never sit in a saucer of standing water.
- 4
Feed lightly through the growing season
Apply a balanced liquid fertiliser at half the recommended strength once a month from April through September. Ferns are light feeders — over-fertilising causes brown leaf tips and forces weak, pale growth. A seaweed-based feed is particularly gentle and also improves soil structure around the roots. Stop feeding entirely from October to March, when the plant is resting.
- 5
Maintain humidity and remove dead fronds
Ferns evolved on the forest floor, where humidity is naturally high. Indoors, mist the fronds lightly two or three times a week, or set the pot on a tray filled with damp gravel. Outdoors, a layer of bark mulch around the base of the plant retains moisture and keeps roots cool. As older fronds yellow and die back, cut them cleanly at the base with sharp scissors — this encourages fresh growth and keeps the plant looking neat for guests or residents.
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FAQ
- Can I grow ferns outdoors year-round in Greece?
- Most common fern varieties handle Greek winters comfortably, as temperatures rarely drop below freezing on the coast or in southern regions. In mountainous or northern areas, move container ferns to a sheltered spot or unheated porch from December to February. Hardy varieties such as sword fern (Polystichum) and Dryopteris are reliably frost-tolerant to around -10°C.
- Why are the tips of my fern fronds turning brown?
- Brown tips are almost always caused by low humidity or inconsistent watering rather than disease. Move the plant away from air-conditioning vents, increase misting, and check that you are watering before the compost dries out completely. If you recently fertilised, flush the pot with plain water to remove any salt build-up from the compost.
- How often should I repot my fern?
- Repot every one to two years in spring, or sooner if roots are visibly circling the bottom of the pot or growing through the drainage holes. Move up only one pot size at a time — too much extra compost around the roots stays wet for too long and encourages rot. After repotting, keep the plant out of direct sun for a week while it settles.