Reference specimenAccession  SKU-01244

Lygodium japonicum

Japanese Climbing Fern

At a glance
Hardiness
USDA Zones 7–10
Sun
Part Shade
Soil
Well-drained, Moist
Mature size
Height 3–20 Feet · Spread 3–20 Feet
Growth rate
Fast
Seasonality
Semi-Evergreen
Lygodium japonicum
Lygodium japonicum, Japanese Climbing Fern at Woodlanders
A plant Woodlanders once offered on our catalogue

This variety is no actively in production in our propagation house and may not return to our catalogue. We maintain this page purely for reference and archival purposes. If you would like to grow this plant, tell us. Your interest helps guide what we bring back.

For a larger installation or commercial project, write hello@woodlanders.net.

Lygodium japonicum, known as Japanese climbing fern, is a fast-growing vine with delicate fronds. It climbs naturally and can cover trellises, arbors, or low fences.

This climbing vine prefers moist, rich soil and filtered light. In cooler areas of zone 8, it grows as a die-back perennial and returns with warm weather. In warm climates, growth may spread aggressively.

Use this ornamental fern with care, especially in zone 9, where it can escape garden settings. In the right zone, it offers graceful texture and vertical growth without heavy maintenance.

Flower, Fruit & Foliage

Flower Description:

  • Note: As a fern, Lygodium japonicum does not produce true flowers. Instead, it reproduces through spores, which develop on the underside of fertile fronds.
  • Appearance: Small sporangia (spore-producing structures) are clustered in sori, appearing as tiny, brownish patches on the underside of the leaflets.
  • Season: Spores are typically produced in late summer to early fall.

Foliage Description:

  • Type: Evergreen in warm climates and semi-evergreen or deciduous in cooler regions.
  • Shape: The foliage consists of climbing fronds that twine and branch extensively. Leaflets (pinnules) are delicate, lacy, and deeply lobed, resembling feathery lacework.
  • Size: Fronds can grow up to 90 feet long under optimal conditions, with individual leaflets measuring 1–3 inches.
  • Color: Bright green when young, maturing to a medium to dark green.
  • Texture: Soft and airy, giving the plant a light, elegant appearance.
  • Growth Habit: Vining and climbing, often covering trellises, fences, or other structures. It can also spread as a groundcover in the absence of vertical supports.
Care

Light Requirements:

  • Partial Shade to Full Sun: Prefers partial shade but can tolerate full sun if provided with adequate moisture. Too much shade may reduce its vigor.

Soil Requirements:

  • Soil Type: Thrives in moist, well-draining soils. It adapts to sandy, loamy, or clay soils if sufficient organic matter is present.
  • pH Preference: Prefers slightly acidic to neutral soil (pH 5.5–7.0).
  • Moisture: Requires consistently moist soil but does not tolerate waterlogging.

Watering:

  • Frequency: Water regularly, ensuring the soil stays evenly moist. Reduce watering slightly during cooler months but never allow the soil to dry out completely.
  • Drought Tolerance: Minimal; requires consistent irrigation during dry spells.

Fertilization:

  • Frequency: Fertilize once in early spring and optionally again mid-summer.
  • Type: Use a balanced, water-soluble fertilizer or organic compost to encourage lush growth.

Pruning and Maintenance:

  • Timing: Prune in late winter or early spring to remove old, dead, or overly tangled fronds.
  • Technique: Cut back any unwanted growth to control its spread. Regular maintenance is necessary to prevent it from overtaking nearby plants.

Temperature and Hardiness:

  • USDA Zones: Hardy in zones 7–10.
  • Temperature: Thrives in warm, humid climates. Sensitive to frost and may die back in colder regions, regrowing in spring.

Support Structures:

  • Type: Provide a trellis, fence, or other support structure for the fern to climb. It can also be used to cover unsightly walls or as a groundcover.

Pests and Diseases:

  • Generally pest-free but may occasionally attract scale insects or spider mites in dry conditions.
  • Overly wet or shaded areas may encourage fungal issues; ensure good air circulation to prevent these.

Propagation:

  • Propagate via spores, which develop on the underside of mature fronds. It can also spread through its underground rhizomes.
  • Division is another effective propagation method, but ensure rhizomes are planted in a well-prepared area to control growth.

Special Notes:

  • Invasiveness: Japanese climbing fern is highly invasive in parts of the southeastern United States and other warm climates. If you live in a region where it is invasive, consider planting it in containers or avoid using it entirely. Always check local regulations before planting.
  • Erosion Control: In non-invasive regions, it can be a great choice for stabilizing slopes or adding greenery to difficult areas.
  • Use in Gardens: Excellent for naturalistic gardens, fern collections, and as a climber in shaded areas.