About Japanese Climbing Fern. Japanese climbing fern is closely related to Old World climbing fern (Lygodium microphyllum), another non-native invasive species in the United States, which is very widespread in south Florida. Japanese climbing fern (Lygodium japonicum) is a perennial climbing fern native to East Asia.It was introduced to the southeastern U.S. as an ornamental in the early 1900s. Japanese climbing fern is a highly invasive non-native plant infesting public conservation lands in North and West Florida and present in much of the southeastern U.S. If fern coverage is se-vere enough to warrant a specific treatment, applications However, Escort would be inade-quate for the needs of the pine straw farmers because the Gainesville, Florida, USA: University of Florida Institute of Food and Agricultural Sciences. Plant: Japanese climbing fern (Lygodium japonicum) is a climbing and twining perennial vine-like fern native to Asia and tropical Australia. Despite its attractive appearance, Japanese climbing fern is a Category I noxious weed (listed by the Florida Exotic Pest Plant Council) that is overtaking forests throughout the southeast. The Japanese Climbing Fern is a perennial viney fern, climbing and twining to 90 feet (30 m) long, with lacy, finely divided leaves along green to orange to black wiry vines, often forming mats of shrub- and tree-covering infestations. Figure 5. St. Louis, Missouri, USA: Missouri Botanical Garden. Escort performance at 1-2 oz/a was desirable from a natural resource perspective because of the reduced non-target damage of understory plants relative to Accord. Missouri Botanical Garden, 2015. Biology and Control of Japanese Climbing Fern (Lygodium japonicum) 2 Lygodiummicrophyllum Japanese climbing fern is distinguished by its feathery, light green fronds, with triangular, compound leaf branches (pinnae) and lobed, stalked leaflets (pinnules) on wiry, twining, stems (rachises), often orange to brown in color. It tolerates sun and shade. Associate Professor, Forest Ecology and Silviculture. Tropicos database. It has lacy finely divided leaves along green-to-orange-toblack wiry vines. Japanese climbing fern [Lygodium japonicum (Thunb.) Collaborators: Greg MacDonald, Mack Thetford, and … Control of Japanese climbing fern (Lygodium japonicum) reproduction Presenter: Kimberly Bohn, Ph.D. (Photo by Andrew Ezell) Japanese Climbing Fern Japanese climbing fern is an introduced vine that can engulf young pine trees and result in reduced growth and vigor and, in extreme cases, death. control of Japanese climbing fern. Identification: This fern has lacy finely-divided leaves along green to orange to black wiry vines that can grow up to 90 ft long.Stems are slender but difficult to break; they are twining and climbing, wiry, green to straw-colored or reddish. for control of Japanese climbing fern. Biology and control of Japanese climbing fern (Lygodium japonicum). Currently, chemical control options for Japa-nese climbing fern are limited to glyphosate as a low volume foliar application at a rate of 4 qt/A or 2%. University of Florida Cooperative Extension Service Publication FOR218. Example of mid-rotation brush control application results. Sw.] is a climbing and twining, perennial viney fern to 90 feet (30 m), often forming mats of shrub- and tree-covering infestations. Mechanical Eradication from a site can difficult due to the production of small spores missed during plant removal or dispersed in wind or soil from off-site. 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