giant hare's foot fern Care (Davallia solida)

giant hare's foot fern

About giant hare's foot fern

The giant hare's foot fern, Davallia solida, is an epiphytic or lithophytic fern known for its creeping, fuzzy rhizomes that resemble a hare’s foot. These rhizomes often sprawl over the pot edge or across bark and rock surfaces.

Its fronds are finely divided, forming a light, airy canopy that contrasts with the thick, hairy rhizomes. In nature it grows in warm, humid forests from Southeast Asia to the Pacific region, usually on tree trunks or rocky slopes.

This species prefers stable moisture, good air movement, and a loose, well-draining medium. Understanding how to care for giant hare's foot fern starts with providing bright, filtered light and avoiding waterlogged conditions.

Main Plant Requirements

Care Difficulty

Moderate Care

Light Preference

Partial Shade

Water Requirements

Keep Soil Moist

Temperature Preference

Tropical / Frost Sensitive

Hardiness Zone

10–11

Soil Texture

Loamy, Peaty, Organic-rich

Soil pH

Acidic (5.5–6.5)

Soil Drainage

Moist but well-drained

Fertilization

Light (every 4–6 weeks)

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How to Care for the giant hare's foot fern

This fern prefers bright, indirect light that mimics dappled forest shade for steady growth.

  • Provide 4–6 hours of bright, filtered light daily, such as near an east-facing exposure or under light tree canopy when caring for giant hare's foot fern outdoors.
  • Tolerates partial to full shade, but growth becomes looser and fronds longer if light is very low for many weeks.
  • Avoid direct midday and afternoon sun, which can scorch fronds; brief early-morning sun is acceptable in cooler seasons.

This fern favors consistently moist but not waterlogged conditions around its fibrous roots and rhizomes.

  • Water when the top 2–3 cm of soil or substrate feels just starting to dry, aiming for evenly damp, not soggy, moisture.
  • Increase checks in warm, dry weather and reduce watering in cooler months, allowing slightly more drying between waterings then.
  • Watch for pale, crisp fronds as a sign of underwatering and blackened, limp bases or sour smell as indicators of overwatering in Davallia solida.

This species grows best in mild, frost-free climates with stable, moderate temperatures.

  • Aim for 60–75°F (16–24°C) for active growth; brief dips to 50°F (10°C) are usually tolerated if soil is not waterlogged.
  • Protect from frost, as damage often occurs below about 40°F (4°C); prolonged exposure near freezing can kill fronds and rhizomes.
  • In hot weather above 86°F (30°C), give extra shade, airflow, and slightly higher humidity to reduce stress and frond scorch.

This fern prefers consistently moist air and reacts quickly to dry conditions indoors.

  • Aim for 50–70% humidity; it tolerates brief dips lower but long periods under 40% cause stress.
  • Crisping frond tips, stalled growth, and browning of the fuzzy rhizomes indicate humidity is too low.
  • Use a room humidifier, grouped plants, or a wide pebble tray under the pot to raise humidity around giant hare's foot fern.

This species prefers a loose, fibrous, and airy mix that stays lightly moist but never waterlogged.

  • Use a mix of roughly 40% peat or coco coir, 30% fine bark, and 30% perlite or pumice to mimic a coarse forest floor.
  • Ensure very sharp drainage; water should run through within seconds and the surface should not stay soggy for more than a few hours.
  • Keep pH slightly acidic to neutral, around 5.5–7.0, which supports nutrient availability for Davallia solida without causing root stress.
  • Avoid dense garden soil, heavy clay, or mixes with a high proportion of fine compost, which collapse, reduce aeration, and promote root rot.

This fern is well suited to container growing, especially in shallow, wide pots or hanging baskets.

  • Choose a broad, shallow container so the creeping rhizomes can spread across the surface rather than forcing deep rooting.
  • Select a slightly porous material such as unglazed terracotta if the mix stays wet longer than 2–3 days, to speed surface drying.
  • Position hanging or elevated containers so that spreading rhizomes do not press tightly against walls, which can trap moisture and cause rot.

Davallia solida benefits from light, consistent feeding during active spring–summer growth but is sensitive to excess salts.

  • Apply a balanced liquid fertilizer (around 10-10-10 or 20-20-20) at 1/4–1/2 strength every 4–6 weeks in spring and summer.
  • Use a slow-release fern-safe fertilizer or fine compost sparingly on the pot surface, keeping particles off the rhizomes.
  • Flush the pot with plain water every few months to limit salt buildup in the mix.
  • In fall and winter, when growth slows, reduce feeding to once in the season or stop entirely, monitoring foliage color.

Pruning Davallia solida focuses on grooming and maintaining a neat, airy frond canopy rather than heavy cutting.

  • Best timing is late winter to early spring, before strong new growth begins.
  • Remove dead, yellowing, or damaged fronds at the base with clean, sharp scissors or snips.
  • Thin a few crowded interior fronds if needed to improve light and air movement through the clump.
  • Avoid cutting healthy rhizomes; light grooming preserves the natural arching shape and prevents stress.

This fern prefers to be slightly root- and rhizome-bound, so repotting is infrequent and should be done with care.

  • Repot every 2–3 years, or when roots circle the pot, mix breaks down, or growth becomes noticeably slower.
  • Choose early spring for Davallia solida, so it can recover quickly as new fronds emerge.
  • Shift to only a slightly larger pot, keeping rhizomes near the surface in a loose, airy, peat-free, high-organic mix.
  • Handle rhizomes gently, avoid breaking them, water thoroughly after repotting, then keep in bright, sheltered conditions for 1–2 weeks.

This species is most practically multiplied by division of its creeping rhizomes rather than by spores in home settings.

  • Plan division in spring, when new growth starts and recovery is fastest.
  • Lift the plant gently and separate the rhizome into sections, each with several fronds and healthy roots.
  • Plant divisions shallowly in a fine, airy fern mix, with rhizomes partly exposed at the surface.
  • Maintain high humidity, stable 65–75°F temperatures, and lightly moist (not wet) substrate until new fronds expand.

Grown outdoors, giant hare's foot fern suits mild, frost-free climates; in colder regions it needs indoor or protected conditions over winter.

  • This fern is frost-sensitive; sustained temperatures below about 40°F can damage fronds and rhizomes.
  • Move container plants indoors before the first frost, placing them in bright, indirect light away from drafts.
  • Keep indoor temperatures around 60–75°F, water sparingly but do not allow the root ball to dry completely.
  • For sheltered outdoor plantings in mild zones, use a loose mulch around, not over, rhizomes to buffer soil temperature.

Care Tips

Support exposed rhizomes

Place the plant in a shallow, wide container and gradually mound airy substrate like fine bark or sphagnum around emerging furry rhizomes so they can root and anchor instead of drying out in midair.

Rotate for even fronds

Turn the pot 90° every 2–3 weeks so new fronds develop evenly around the plant, preventing one-sided, lopsided growth under a fixed light source.

Use elevated mounts

Grow the plant in a hanging basket or on a shallow mounted slab with a moisture-retentive liner to allow rhizomes to creep freely while still having constant, light contact with a damp but not soggy surface.

Fine-mist cleaning

Use a hand mister with lukewarm water to gently wash dust from fronds and rhizomes every 2–4 weeks, which lowers spider mite risk and keeps the fine leaf segments photosynthesizing efficiently.

Seasonal division timing

If division is needed for size control, split established clumps only in late spring to early summer, taking sections with at least 3–4 healthy fronds each to minimize stress and support faster recovery when caring for giant hare's foot fern.

Common Pests and Diseases

Scale insects

This pest attaches to fronds and rhizomes, sucking sap and causing yellowing, stunted fronds, and sticky honeydew on nearby surfaces.

Solution

Isolate the plant, then wipe fronds and exposed rhizomes with a cotton pad dipped in 70% isopropyl alcohol or insecticidal soap, repeating weekly until no new scales appear; for heavier infestations on a large clump, use a systemic insecticide labeled for ferns and improve air movement to reduce reinfestation risk.

Mealybugs

These insects hide in frond bases and among the hairy rhizomes, leaving white cottony clusters and causing distorted, weakened growth.

Solution

Remove visible mealybugs with a cotton swab dipped in alcohol, rinse the foliage and rhizomes under a gentle lukewarm shower, then use insecticidal soap or a neem-based spray every 7–10 days, ensuring the solution reaches crevices where the rhizomes rest on the pot rim or mounting surface.

Fern scale (soft scale)

This pest often colonizes older fronds and the creeping rhizomes, appearing as small tan or brown bumps that cause gradual frond yellowing and decline.

Solution

Trim and discard heavily infested fronds, scrub affected rhizomes gently with a soft brush and soapy water, then apply a horticultural oil spray labeled safe for ferns, repeating after 7–14 days while keeping the plant out of direct sun during treatment.

Rhizome rot (fungal)

This disease affects the thick creeping rhizomes when they stay wet and airless, leading to soft, dark, foul-smelling tissue and rapid frond wilt.

Solution

Unpot the plant, cut away all soft or blackened rhizome sections with a sterile blade, dust cuts with a sulfur or copper-based fungicide, then repot in a shallow container with a very well-drained, coarse mix and keep the rhizomes mostly above the substrate while adjusting watering so the medium dries slightly between waterings.

Rhizoctonia leaf spot

This disease causes small dark lesions that expand into irregular brown patches on fronds, often starting where moisture sits on the leaf surface for long periods.

Solution

Remove and dispose of affected fronds, increase air circulation around the plant, avoid overhead watering, and apply a broad-spectrum fungicide labeled for ferns if new spots continue to appear, following label directions and allowing fronds to dry quickly after any moisture exposure.

Interesting Facts

Epiphytic rock specialist

In the wild, this species often grows as an epiphyte on tree trunks or as a lithophyte on rocks, anchoring into small crevices rather than typical soil.

Thick furry rhizomes

Its conspicuous, brown, hairy rhizomes creep over the surface of bark or rock, storing water and nutrients and helping the plant survive short dry spells.

Wide Pacific distribution

This fern occurs naturally from eastern Australia through New Zealand and many Pacific islands, where it occupies humid forests from lowlands into montane zones.

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Did you know?

Davallia solida shows notable morphological variation across its range, with different geographic forms displaying distinctly shaped fronds and rhizome thickness, which has led botanists to describe several subspecies and closely related taxa within the Davallia solida complex.

FAQs about giant hare's foot fern

Brown leaf tips or fronds usually come from low humidity, underwatering, or fertilizer burn. Improve humidity, keep the root zone lightly moist, and flush excess fertilizer salts with plain water to help new fronds grow healthier.

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