NPSOT Logo

Japanese Climbing Fern

Lygodium japonicum

Other Common Names

None for this invasive

Plant Category

Perennial, Vine

Invasive Description

Japanese Climbing Fern is from eastern Asia, Japan in particular. It is a perennial viney fern, sprawling, climbing and twining to 90 feet long. It has lacy divided fronds on green to orange to black wiry vines. Tan-brown to green fronds persist in winter. It often forms infestations of mats on the ground or in trees. Vines arise from underground widely creeping rhizomes. It resembles American Climbing Fern (L. palmatum), a native, non-invasive plant and Old World Climbing Fern (L. microphyllum), a very invasive non-native plant in the South. Japanese Climbing Fern is still being sold commercially online.

Ecological Threat

Japanese Climbing Fern occurs along highway rights-of-way, especially under and around bridges, invading into open forests and forest margins and into stream and swamp areas. It can increase in cover to form mats, especially after burns, smothering shrubs and trees. Creates “fire ladders” to carry fires upward into the forest canopy. It persists and colonizes by rhizomes and spreads by wind-dispersed spores that are also transported in pine straw mulch. The fern dies back in late winter in more northern areas with the dead vines providing a trellis for reestablishment.

You may not want or need to replace this invasive plant, but if you do, options are listed below.

Japanese Climbing Fern is on the Texas Dept. of Agriculture’s list of Noxious Plants which are illegal to sell, distribute or import into Texas.

If you believe you have found Japanese Climbing Fern, please report this at Texasinvasives.org. Click “Take Action”, then “Report It”.

How to Eradicate

For information on how to eradicate this invasive, view our statement on herbicide use and preferred alternatives for invasive plants.

Native Alternatives

You can replace this invasive plant with native alternatives. Here are some plants that make superior replacements.

Match your location on the Texas map to the color squares on the replacement plants below to find suitable replacements for your ecoregion.

Click for more details about the ecoregions
Additional Replacement Options: Anemia mexicana, Pteridium aquilinum