The Fernette fern is a distinctive cultivar that adds unique elegance to indoor and outdoor spaces. Its unusual wavy, strap-like fronds and evergreen nature offer a refreshing alternative to more traditional fern varieties.
What is Fernette
The Fernette fern is a cultivated variety of the Hart’s Tongue Fern (Asplenium scolopendrium ‘Fernette’). This cultivar features glossy, undivided fronds with wavy or ruffled edges. Unlike many ferns with finely dissected fronds, ‘Fernette’ has broad, strap-like foliage that grows upright, creating a distinct architectural presence. Its leathery texture adds to its resilience.
The parent species, Asplenium scolopendrium, originates from temperate regions, thriving in rocky, shaded environments, often on lime-rich soils. This indicates its preference for consistent moisture and shade. The Hart’s Tongue Fern is hardy in USDA Zones 5 to 9, suitable for outdoor cultivation in many areas, and also excels as an indoor houseplant.
Fernette Care Guide
Light Requirements
Fernette ferns thrive in bright, indirect light. Place them near a north-facing window or in a location with filtered sunlight. Direct sun can scorch fronds, leading to browning or yellowing. Yellowed or crispy fronds indicate too much light. Leggy fronds or a loss of vibrant green color suggest insufficient light, requiring a brighter spot.
Watering Needs
Maintain consistent soil moisture for Fernette ferns. Keep the soil evenly damp but never waterlogged, as this can lead to root rot. Proper drainage is crucial for both potted and garden ferns. Before watering, check the top inch or two of soil; if it feels slightly dry, water. For potted ferns, water until it drains from the bottom. Watering frequency varies with environmental factors.
Soil Preferences
Fernette ferns prefer a well-draining soil mix rich in organic matter. The soil pH should be slightly acidic to neutral, though they can tolerate slightly alkaline conditions. A suitable potting mix includes peat moss or coco coir for moisture retention, combined with perlite or horticultural sand for drainage and aeration. This blend allows roots to spread easily and prevents soil compaction or sogginess.
Temperature and Humidity
Fernette ferns prefer moderate temperatures, thriving between 60°F and 75°F (15°C to 24°C). Protect them from sudden temperature fluctuations and cold drafts, which cause stress. High humidity is beneficial, mimicking their natural woodland habitat. Low humidity can lead to frond tips turning brown and crispy. To increase humidity, place the potted fern on a pebble tray with water, ensuring the pot does not sit directly in it. Grouping plants or using a room humidifier are effective methods.
Fertilization
Fertilize Fernette ferns during their active growing season (spring and summer). A balanced liquid fertilizer, diluted to half strength, is recommended. Avoid over-fertilizing; ferns are sensitive to excessive nutrients and it can lead to foliage burn. Organic options like compost or worm castings provide slow-release nutrients. For commercial fertilizers, a balanced N-P-K ratio (e.g., 10-10-10 or 20-20-20) is suitable. Reduce or stop fertilization during dormant winter months. Always water thoroughly before applying fertilizer to prevent root burn.
Propagating Fernette
Propagate Fernette ferns through division, ideally in spring when repotting. Carefully remove the fern from its pot and gently tease apart the root ball into smaller sections. Each section needs a portion of the rhizome and some fronds. A sharp, clean knife can separate stubborn sections, minimizing root damage.
Plant each new section in its own pot with fresh, well-draining potting mix. Keep divisions in a humid environment with consistent moisture to help them establish. Ferns can also be propagated from spores found on mature fronds. Spore propagation is a more complex and time-consuming process, typically suited for experienced cultivators.
Troubleshooting Fernette Problems
Fernette ferns can encounter common issues, often signaling a need for care adjustment. Browning frond tips frequently indicate low humidity or insufficient watering. Increase ambient humidity and ensure consistently moist, but not waterlogged, soil. Yellowing fronds may indicate overwatering or a nutrient deficiency. Allow the topsoil to dry slightly between waterings to prevent soggy conditions and root issues.
Stunted growth results from inadequate light or lack of nutrients. If soil nutrients are depleted, apply a balanced fertilizer during the growing season. Common pests include spider mites, mealybugs, and aphids. These sap-sucking insects cause frond discoloration or distortion. Regularly inspect fronds, especially the undersides, for early detection. For small infestations, wipe pests with a damp cloth or alcohol-dipped cotton swab. For widespread issues, apply insecticidal soap or neem oil.