The Laua’e Iki fern (Phymatosorus scolopendria or Microsorum scolopendria) brings a tropical feel to any space. It is also known by common names such as Maile-Scented Fern, Monarch Fern, Wart Fern, Creeping Fern, and Serpent Fern. Its distinct appearance and low-growing habit make it a favored choice.
Understanding Laua’e Iki Fern
This fern originates from the Western Pacific rim, including Hawaii, Australia, Fiji, and other South Pacific islands. In its native habitat, it thrives on trees, rocks, or earth banks. The Laua’e Iki fern is a dwarf cultivar, typically growing to a height of 12 to 24 inches.
Its fronds are deep, glossy green, with a leathery texture and often wavy margins. These strap-like leaves can be heavily lobed, arising from slender, dark stems. A distinguishing characteristic is the presence of sori, or spore clusters, on the underside of its fronds, which cause small, wart-like projections on the upper surface, contributing to its “Wart Fern” moniker. The fern is subtly fragrant, sometimes described as having a maile-like scent when its fronds are crushed or dried. It exhibits a low, creeping growth habit, making it suitable as a groundcover or for hanging baskets.
Caring for Your Laua’e Iki Fern
Light Requirements
Laua’e Iki ferns thrive in bright, indirect light. Place them near an east, west, or south-facing window with filtered light. Direct sun exposure can discolor or stunt fronds, so avoid harsh, unfiltered sunlight.
Watering Needs
Maintain consistent soil moisture for these ferns. Keep the soil evenly moist, but never waterlogged. Allow the top layer of soil to dry out slightly before watering again to ensure proper drainage and prevent root issues.
Humidity
Laua’e Iki ferns prefer high humidity. Misting the plant regularly, especially during drier winter months, increases ambient humidity. A pebble tray filled with water or a nearby humidifier also helps create a humid environment.
Soil and Potting
A well-draining, all-purpose potting mix rich in organic matter is ideal. Incorporate compost or coco coir to enhance drainage and retain moisture. Repotting should occur in spring, only when roots are dense and filling the pot, or every two to three years. If not repotting, refresh the top layer of potting mix with new compost for nutrients.
Temperature
These ferns prefer warm, stable temperatures. An ideal range is 65°F to 80°F (18°C to 27°C). Avoid sudden temperature fluctuations and cold drafts.
Fertilizing
During the growing season (spring and summer), the Laua’e Iki fern benefits from regular fertilization. Apply a diluted liquid fertilizer every two to three months at half strength. A balanced houseplant fertilizer, such as a 20-20-20 or 20-10-20 formulation, supports healthy frond development.
Propagating Laua’e Iki Fern
The most common method for propagating Laua’e Iki fern is through rhizome division. Separate a portion of the plant, ensuring each new section has healthy roots and fronds. Plant these divisions into their own pots with appropriate soil. Spore propagation is also possible, but it is a more advanced technique less frequently undertaken by home growers.
Common Challenges and Solutions
Browning fronds often indicate insufficient humidity, underwatering, or excessive direct light. Increase ambient humidity through misting or humidifiers, and adjust watering schedules or light exposure. Removing damaged fronds encourages new, healthy growth.
Yellowing fronds can signal overwatering, nutrient deficiencies, cold drafts, or incorrect light levels. Adjust watering practices, provide a balanced fertilizer, ensure stable temperatures, and optimize light conditions. The Laua’e Iki fern is generally resistant to pests. If common houseplant pests like spider mites or mealybugs appear, apply organic solutions such as neem oil or insecticidal soap.