Himalayan maidenhair fern

Sun

Partial to full shade; gentle morning sun is suitable where the soil stays moist. Avoid hot afternoon sun and exposed, windy sites.

Water

Keep the soil evenly moist, especially during establishment and dry summers, but not waterlogged.

Soil

Humus-rich, well-drained soil, preferably neutral to slightly acidic. Improve dry or compacted ground with leaf mould or compost.

Height

0.5-1 ft (0.15-0.3 m)

Spread

1.5-3 ft (0.45-0.9 m), spreading farther over time in suitable soil

Foliage

Evergreen. Finely divided, triangular fronds with small, fan-shaped green leaflets on wiry, dark brown to black stems. New fronds often emerge coppery-pink; older foliage may bronze in cold weather.

Growth

Slow to moderate; establishes gradually, then spreads by creeping rhizomes.

Care needed

Low

• Deer resistant
• Wildlife
• Low allergen

Northern hemisphere months. In Australia, shift them by six.

Difficulty

Easy

Toughness

Fairly tough

Pick your zone, country, light and whether you have pets.

1. Planting day

   0.7 ft (0.22 m)

   full size

About 4 years to full size.

From a typical nursery size, at an average rate for this kind of plant. A rule of thumb, not a forecast.

Cats and dogs

Safe

Growth rate

Slow

• Water during dry spells before the soil around the shallow rhizomes dries out.
• Apply a thin layer of leaf mould or well-rotted compost each spring, keeping emerging fronds uncovered.
• Avoid routine heavy feeding; an annual organic mulch is usually sufficient.
• Shelter from drying winds and strong afternoon sun.
• Divide established patches in spring if you need more plants or want to limit their spread.

Pruning. In late winter or early spring, cut damaged or dead fronds close to the ground before new growth unfurls. Leave healthy evergreen fronds in place.

Late winter

Remove dead or badly weathered fronds without damaging the emerging growth.

Spring

Plant or divide into moist, prepared soil and water thoroughly.

Mid-spring

Top-dress with leaf mould or well-rotted compost.

Summer

Check soil moisture during hot or rainless weather and water before fronds begin to crisp.

Autumn

Plant in mild regions while the soil is still warm; keep new plants watered.

Winter

Leave healthy foliage intact and check that water is not standing around the rhizomes.

• Use as a fine-textured groundcover beneath deciduous shrubs where roots do not leave the soil too dry.
• Edge shaded paths with low drifts that soften paving without hiding the route.
• Plant among mossy rocks in a sheltered, moist woodland setting.
• Combine with broad-leaved hostas and hellebores for contrasting foliage shapes.
• Grow in shaded courtyard containers with reliable watering and good drainage.

Garden styles it suits: Woodland, Japanese, Moss and fern garden, Secret garden, Pacific Northwest woodland and Green on green.

Plant it with: Hostas, Hellebores, Siberian bugloss, Epimediums, Japanese painted fern and Solomon's seal.

Wildlife: Dense patches provide damp shelter for small garden invertebrates. As a fern, it has no flowers, nectar or pollen for pollinating insects.

• Brown, crisp fronds usually indicate dry soil, hot sun or drying wind; water deeply and provide more shade or shelter.
• Yellowing and collapse in persistently wet soil can indicate rhizome rot; improve drainage and avoid waterlogged planting sites.
• Slugs and snails may damage emerging fronds; inspect young growth and use hand-picking or wildlife-conscious controls where needed.
• Hard frost can brown or kill the fronds without killing the plant; leave the rhizomes undisturbed and remove dead foliage before spring growth.

Not known to be toxic to cats, dogs, horses or people. No part is recognised as poisonous, but it is not a food plant and should not be eaten.

• Northern maidenhair fern (Adiantum pedatum)

  Its fronds branch into a distinctive, nearly circular hand-shaped arrangement, rather than the triangular outline of Himalayan maidenhair fern.

• Southern maidenhair fern (Adiantum capillus-veneris)

  Usually has larger, more conspicuously fan-shaped leaflets on a more open frond. It is less cold-hardy and often grows naturally on damp, lime-rich rock.

Adiantum comes from Greek meaning 'unwetted', referring to the water-shedding foliage, while venustum means 'charming' or 'beautiful' and Himalayan refers to its native region.

Propagation. Divide established patches in spring, taking sections with healthy rhizomes, roots and growing points. Replant promptly and keep moist. Propagation from spores is possible but slow and requires consistently humid conditions.

Accepted botanical name

Adiantum venustum

Native range

Afghanistan, Assam, China North-Central, China South-Central, East Himalaya, Myanmar, Nepal, Pakistan, Qinghai, Tibet and West Himalaya.

Sources: GBIF (CC BY 4.0) and Trefle (CC BY 4.0). The care and design notes are LandscapeGPT's own.