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You are viewing an archived site. The Chesapeake Bay Introduced Species Database project ended in 2020 and the database is no longer receiving updates. Learn more…
Image of Lonicera japonica

Lonicera japonica

Plants

Japanese Honeysuckle

Image Credit: Paul Fofonoff

Taxonomy Invasion History Ecology Impacts References

Description


Taxonomy

Kingdom Phylum Class Order Family Genus
Plantae Magnoliophyta Magnoliopsida Dipsacales Caprifoliaceae Lonicera

Synonyms

Lonicera japonica var. chinensis; Nintooa japonica

Invasion History

Chesapeake Bay Status

First Record Population Range Introduction Residency Source Region Native Region Vectors
1876 Established Stable Introduced Boundary Resident East Asia East Asia Ornamental(Garden Escape)

History of Spread

Lonicera japonica (Japanese Honeysuckle) was introduced to North America in the mid-19th century, and soon became naturalized, on Long Island by 1862, and in many other Northeast locations by the turn of the century, reaching North Carolina by 1891 and Florida by 1903 (Hardt 1996; Patterson 1976; Wells and Brown 2000). It now ranges from southern ME to TX, and west to the CA coast (Natural Resources Conservation Service 2000).

In the Chesapeake Bay region, L. japonica was first reported from the Washington DC area by 1876 (Potomac-Side Naturalist’s Club 1876), and was growing in 'many remote places' by 1881 (Ward 1881). It now grows throughout the Chesapeake Bay watershed (Brown and Brown 1984; Harvill et al. 1992). In Chesapeake Bay proper, it has been reported on the upper edges of tidal wetlands on Otter Point Creek, Harford County MD (Pasternack et al. 2000); the South River, Edgewater MD (Philipp and Brown 1965), and Sweet Hall Marsh, Pamunkey R. VA (Perry and Atkinson 1997). Tiner and Burke reported it as occurring in 6 of 13 of MD tidal fresh swamps described (Tiner and Burke 1995 ).

References- Brown and Brown 1972; Harvill et al. 1992; Pasternack et al. 2000; Perry and Atkinson 1997; Philipp and Brown 1965; Potomac-Side Naturalist’s Club 1876; Shreve et al. 1910; Tiner and Burke 1995; Ward 1881

Invasion Comments

Ecology

Environmental Tolerances

For SurvivalFor Reproduction
Minimum Maximum Minimum Maximum
Temperature (ºC)
Salinity (‰) 0.0 0.0
Oxygen
pH
Salinity Range fresh-meso

Age and Growth

Male Female
Minimum Adult Size (mm)
Typical Adult Size (mm)
Maximum Adult Size (mm)
Maximum Longevity (yrs)
Typical Longevity (yrs

Reproduction

Start Peak End
Reproductive Season
Typical Number of Young
Per Reproductive Event
Sexuality Mode(s)
Mode(s) of Asexual
Reproduction
Fertilization Type(s)
More than One Reproduction
Event per Year
Reproductive Startegy
Egg/Seed Form

Impacts

Economic Impacts in Chesapeake Bay

Lonicera japonica (Japanese Honeysuckle) is one of the more widespread and abundant invaders of terrestrial environments in the Chesapeake Bay watershed. While it was imported as an ornamental, its ability to rapidly overgrow trees and shrubs resulted in it being widely regarded as a pest (Hardt 1986; Virginia Deparment of conservation and Recreation 2000). The extent to which L. japonica's impacts extend to tidal wetlands is unclear.

Aesthetics- While managed plantings are attractive, overgrown thickets, bushes, and trees are unsightly. In the Washington DC area, L. japonica has damaged historical structures, as well as altering historically significant landscapes and views (Hardt 1986).

Habitat change- Lonicera japonica frequently replaces more desirable wildlife plants. However, its berries are eaten by birds, and its leaves are eaten by deer, and the plant is used as cover by a wide range of wildlife (Hardt 1986).

References- Hardt 1986; Virginia Deparment of Conservation and Recreation 2000


Economic Impacts Outside of Chesapeake Bay

Lonicera japonica (Japanese Honeysuckle) is one of the more widespread and abundant invaders of terrestrial environments in the Eastern United States While it was imported as an ornamental, its ability to rapidly overgrow trees and shrubs resulted in it being widely regarded as a pest Although it has some wildlife value of its own, it replaces more desirable food and cover plants (Hardt 1986; Virginia Deparment of Conservation and Recreation 2000). The extent to which L. japonica's impacts extend to tidal wetlands is unclear. This plant is on numerous state and regional invasive plant lists (USDA Natural Resoruces Conservation Service 2001).

References- Hardt 1986; Virginia Deparment of Conservation and Recreation 2000; Natural Resoruces Conservation Service 2001


Ecological Impacts on Chesapeake Native Species

Lonicera japonica (Japanese Honeysuckle) is common on the edges of tidal swamps and marshes in the Chesapeake Bay region.

Competition- Lonicera japonica is regarded as a serious invader in the Chesapeake Bay watershed, and through much of the Eastern United States. It is treated as 'highly invasive' or 'most damaging' in lists for DE (Delaware Natural Heritage Program 1999), MD (Cooley 1993), and VA (Virginia Department of Conservation and Recreation 1999). When it overgrows trees, L. japonica can inhibit growth of trees through shading, and through below-ground competition for nutrients and water (Dillenberg et al. 1993). However, the degree to which these impacts extend into tidal wetlands is uncertain.

References- Cooley 1993; Delaware Natural Heritage Program 1999; Dillenberg et all. 1993; Pasternack et al. 2000; Perry and Atkinson 1997; Philipp and Brown 1965; Virginia Department of Conservation and Recreation 1999


Ecological Impacts on Other Chesapeake Non-Native Species

Lonicera japonica (Japanese Honeysuckle) is common on the edges of tidal swamps and marshes in the Chesapeake Bay region.

Competition- Lonicera japonica is a potential competitor with other invasive vines in Chesapeake Bay wetlands, such as Clematis terniflora (Yam-Leafed Clematis) and Polygonum perfoliatum (Mile-a-Minute). This vine may also overgrow other nonidigenous and cryptogenic plants at the fringes of tidal welands, such as Phragmites australis (Fofonoff, personal observation). However, the extent of this competition in tidal wetlands has not been studied.

References- Fofonoff, personal observation


References

Brown, M. L.; Brown, R. G. (1972) Woody plants of Maryland., , College Park. Pp.

Cooley, Gene (1993) Invasive exotic plants that threaten native species and natural habitats in Maryland., , Annapolis MD. Pp.

1998 Non-native plant species in Delaware. http://www.dnrec.statede.us/iw/weeds.htm

Dillenburg, Lucia R.; Whigham, Dennis F.; Teramura, Alan H.; Forseth, Irwin N. (1993) Effects of vine competition on availability of light, water, and nitrogen to a tree host (Liquidambar styraciflora)., American Journal of Botany 80: 244-252

Fernald, Merritt L. (1950) Gray's Manual of Botany, In: (Eds.) . , New York. Pp.

Gleason, Henry A.; Cronquist, Arthur (1991) Manual of vascular plants of northeastern United States and adjacent Canada, In: (Eds.) . , Bronx, New York. Pp.

Hardt, Richard A. (1986) Japanese honeysuckle: From 'one of the best' to ruthless pest., Arnoldia 46: 27-34

Harvill, A. M.; Bradley, Ted R.; Stevens, Charles E.; Wieboldt, Thomas F.; Ware, Donna M. E.; Ogle, Douglas W.; Ramsey, Gwynn W.; Fleming, Gary P. (1992) Atlas of the Virginia Flora, , Burkeville, VA. Pp.

1997-2024 USDA PLANTS Database.. Onine databse

Pasternack, Gregory B.; Hilgartner, William B.; Brush, Grace S. (2000) Biogeomorphology of an upper Chesapeake Bay river-mouth tidal freshwater marsh, Wetlands 20: 520-537

Patterson, David T. (1976) The history and distribution of five exotic weeds in North Carolina, Castanea 41: 177-180

Perry, James E.; Atkinson, Robert B. (1997) Plant diversity along a salinity gradient of four marshes on the York and Pamunkey Rivers in Virginia, Castanea 62: 112-118

Philipp, Charles C.; Brown, Russell C. (1965) Ecological studies of transition-zone vascular plants in South River, Maryland, Chesapeake Science 6: 73-81

Shreve, Forrest M.; Chrysler, M. A.; Blodgett, Frederck H.; Besley, F. W. (1910) The Plant Life of Maryland, , Baltmore. Pp.

1995 Introduced plants in Chesapeake Bay, letters and telephone conversations.

Tiner, Ralph W., Jr.; Burke, David G. (1995) Wetlands of Maryland, , Newton Corner, MA. Pp.

1999 Invasive Alien Plant Species of Virginia. http://www.state.va.us/~dcr/dnh/invlist.htm

Ward, L. F. (1881) Guide to the flora of Washington and Vicinity, United States National Museum Bulletin 22: 1-264

Wells, Elizabeth Fortson; Brown, Rebecca Louise (2000) An annotated checklist of the vascular plants in the forest at historic Mount Vernon: A legacy from the past., Castanea 65: 242-257


Direct questions and comments to chesnemo@si.edu.

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