palapalai Care (Microlepia strigosa)

Also known as: hay-scented fern
palapalai

About palapalai

Palapalai (Microlepia strigosa) is a finely textured fern known for its light, lacy fronds and softly arching growth habit. It forms loose clumps rather than stiff, upright crowns. This species is native to tropical and subtropical regions, especially in Hawaiʻi and parts of Asia, where it grows in moist, shaded forests. Its preference for consistent moisture, humidity, and protection from harsh sun influences how to care for palapalai in home settings. With stable conditions and well-drained, humus-rich soil, it can adapt to indoor or sheltered outdoor spaces and provide a delicate, airy look.

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)

Get Personalized Care Plan

Scan your plant to receive care tips personalized for your specific plant

Available on iOS and Android

How to Care for the palapalai

Microlepia strigosa prefers bright, filtered light similar to the dappled shade of a forest understory.

  • Provide 2–4 hours of gentle morning sun with bright, indirect or filtered light the rest of the day; avoid strong midday and afternoon sun that can scorch fronds.
  • Plant palapalai where it receives partial to full shade, such as under taller plants or trees, especially in hotter climates.
  • In summer, increase shade or use shade cloth; in winter, allow a bit more direct morning light if possible to maintain dense growth.

This fern needs consistently moist but not waterlogged soil to stay healthy.

  • Water when the top 2–3 cm of soil feels slightly dry, aiming to keep the root zone evenly damp without standing water.
  • Use rich, humus-heavy soil with good drainage; soggy soil causes yellowing, limp fronds and root rot, while crisp browning tips signal underwatering.
  • Reduce watering slightly in cooler months but never let Microlepia strigosa dry out completely, especially in windy or exposed positions.

This fern thrives in mild, frost-free conditions with stable temperatures.

  • Ideal growth occurs around 65–80°F (18–27°C), with steady moisture and shelter from drying winds.
  • Protect plants when temperatures drop near 40°F (4°C); palapalai is damaged by frost and should not be exposed to freezing conditions.
  • In hot weather above 86°F (30°C), give extra shade, maintain soil moisture, and increase humidity to prevent frond scorch and decline.

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

  • Aim for 60–80% humidity to mimic palapalai’s native habitat and support steady frond growth.
  • Crisping tips, dull fronds, and slowed unfurling indicate humidity stress from air that is too dry.
  • Use a room humidifier or pebble tray near the pot, and group plants to create a slightly more humid microclimate.

Microlepia strigosa needs a light, moisture-retentive yet airy substrate to keep roots evenly damp but not stagnant.

  • Use a loose mix of 50–60% peat or coco coir with compost, plus 30–40% perlite and fine bark for structure and aeration.
  • The substrate should drain freely within seconds but stay slightly damp, never waterlogged or dusty-dry.
  • Target slightly acidic pH around 5.5–6.5, which supports nutrient uptake and healthy fern root function.
  • Avoid heavy clay, compacted mixes, or straight garden soil, which quickly suffocate roots and increase rot risk in containers.

This species adapts well to container growing when moisture and stability are carefully managed.

  • Choose a wide, shallow pot that allows its creeping rhizomes to spread horizontally rather than forcing deep root growth.
  • Select a slightly heavier container material if the plant becomes arching, so the pot does not tip as the fronds expand outward.
  • Elevate the pot on feet or a stand so excess water clears the drainage holes and does not reabsorb into the substrate.

Microlepia strigosa benefits from light, consistent nutrition but is sensitive to overfeeding.

  • Use a balanced liquid fertilizer (for example 10-10-10 or 20-20-20) diluted to 1/4–1/2 strength for palapalai in active growth.
  • Feed every 4–6 weeks during spring and summer, applying to moist soil to avoid root burn.
  • Pause or reduce feeding to 1 very light application in late fall if growth slows, and stop in midwinter for indoor plants.
  • In outdoor plantings, occasional top-dressing with fine compost in spring usually provides sufficient nutrients.

Microlepia strigosa pruning focuses on hygiene and maintaining a tidy, airy clump.

  • Best timing is late winter to early spring, before new fronds unfurl, and light touch-ups through the growing season.
  • Remove dead, yellowing, or damaged fronds at the base using clean, sharp scissors or hand pruners.
  • Thin congested, overlapping fronds to improve air movement and reduce disease risk, keeping the plant’s natural arching shape.
  • Avoid cutting into the central crown; trimming only mature fronds helps preserve steady new growth.

This fern prefers slightly snug conditions but benefits from occasional repotting or careful garden transplanting.

  • Plan repotting or transplanting in early spring when new growth starts and temperatures are mild.
  • Check for roots circling the pot, pushing through drainage holes, or slowed growth as signs Microlepia strigosa needs more space.
  • Repot every 2–3 years into a container 2–5 cm wider, using a moisture-retentive, well-draining mix rich in organic matter.
  • Handle the root ball gently, loosen only lightly, water thoroughly after planting, and keep shaded, evenly moist conditions for 1–2 weeks to reduce stress.

Microlepia strigosa is most practically propagated by division rather than from spores for home growers.

  • Divide established clumps in early spring when new croziers (young fronds) are just emerging.
  • Lift the plant, then separate the rhizome into sections, each with several healthy fronds and a good root portion.
  • Plant divisions at the same depth in a loose, humus-rich, consistently moist medium with bright, filtered light.
  • Maintain high humidity, gentle air movement, and evenly moist soil until new fronds appear and growth stabilizes.

This fern has limited frost tolerance and needs protection in colder climates, especially in containers.

  • In mild climates, apply a 5–8 cm mulch layer around the root zone in late fall, keeping it off the crown.
  • Move container-grown plants indoors or into a frost-free greenhouse when nights approach 40°F.
  • Provide cool (50–60°F), bright, indirect light indoors, and keep soil lightly moist but not waterlogged through winter.

Care Tips

Frond renewal

Allow older, yellowing fronds to die back naturally, then remove them cleanly at the base to encourage fresh, dense growth and maintain good air movement through the clump.

Rhizome division

Every 2–3 years, divide the crowded rhizomes in early spring, keeping several healthy fronds and buds per division, to rejuvenate the plant and produce strong new specimens for expanding a colony.

Shallow mulching

Apply a thin 1–2 cm layer of fine bark or leaf mold over the root zone, keeping it off the frond bases, to buffer moisture and temperature without smothering the shallow rhizomes.

Gentle pot cleaning

Periodically rinse accumulated dust from fronds with lukewarm water and let them dry in bright shade to improve photosynthesis and reduce spider mite issues, which is especially helpful when caring for palapalai indoors.

Seasonal acclimation

When moving container plants between indoor and outdoor shade, shift them over 7–10 days by gradually changing light and airflow exposure to prevent shock and frond scorch.

Common Pests and Diseases

Scale insects

These insects attach to fronds and stems, sucking sap and causing yellowing, frond distortion, and sticky honeydew that can lead to sooty mold.

Solution

Remove heavily infested fronds, then wipe remaining fronds and stems with a cotton pad dipped in diluted alcohol or insecticidal soap; repeat weekly until no new scale appears and increase humidity and airflow to support plant recovery as part of overall Microlepia strigosa plant care.

Spider mites

This pest thrives in dry, warm air and causes fine stippling, dull fronds, and delicate webbing between pinnae and along midribs.

Solution

Rinse fronds thoroughly with lukewarm water, then use insecticidal soap or a horticultural oil spray, repeating every 5–7 days for several cycles while raising humidity to 50–60% to discourage reinfestation.

Mealybugs

These insects appear as white, cottony clusters in frond bases and on stems, weakening growth by feeding on sap and excreting sticky honeydew.

Solution

Isolate the plant, physically remove visible clusters with a cotton swab dipped in alcohol, then follow with an insecticidal soap spray targeting hidden insects and repeat treatments every 7–10 days until no new mealybugs are seen.

Nematode leaf lesions

This disease is caused by foliar nematodes that enter through moisture on fronds, creating irregular brown patches between veins that slowly coalesce and weaken the plant.

Solution

Remove and discard all affected fronds, avoid overhead watering, keep foliage dry, and improve spacing and airflow; in severe or recurrent cases, discard the plant and sterilize or replace potting media to prevent reinfection.

Bacterial leaf spot

Symptoms include small water-soaked spots on fronds that enlarge into dark, irregular lesions, often surrounded by a yellow halo along the leaflet edges and tips.

Solution

Promptly prune and discard affected fronds, avoid splashing water on foliage, water at the soil level, and increase air circulation; disinfect cutting tools between plants and, if spread continues, consider replacing the plant and refreshing the growing area to remove bacterial sources.

Interesting Facts

Key hula adornment

In Hawaiian culture, palapalai fronds are a traditional material for hula leis and adornments, valued for their fine texture and graceful, arching form.

Native Hawaiian understory fern

This species is native to Hawaii and commonly grows in moist forest understories and gulches, where its spreading rhizomes help stabilize soil on slopes.

Distinctive hairy rachis

The fern’s main frond stalk, called the rachis, is noticeably rough and hairy, a trait that inspired the species name strigosa, meaning covered with stiff hairs in botanical Latin.

Botan icon

Did you know?

Palapalai was historically associated with Laka, the Hawaiian deity of hula, and is still used ceremonially in some hula traditions, giving this fern a recognized cultural status far beyond its ornamental value.

FAQs about palapalai

Growth is moderately fast under stable moisture, shade, and warmth. New fronds often appear continuously during the growing season, with clumps expanding 5–15 cm per year. Growth slows in low humidity, poor soil, or inconsistent watering.

Grow Healthy Plants with Botan Care

Keep your plants happy and healthy with plant identification, disease detection, and easy care guidance.

Botan plant care app — identify plants on mobile

Explore More Plants