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Lonicera japonica (vine, climber)  |
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Management Information
Preventative measures: A Risk Assessment of Lonicera japonica for Hawai‘i and other Pacific islands was prepared by Dr. Curtis Daehler (UH Botany) with funding from the Kaulunani Urban Forestry Program and US Forest Service. The alien plant screening system is derived from Pheloung et al. (1999) with minor modifications for use in Pacific islands (Daehler et al. 2004). The result is a score of 12 and a recommendation of: "Likely to cause significant ecological or economic harm in Hawai‘i and on other Pacific Islands as determined by a high WRA score, which is based on published sources describing species biology and behaviour in Hawai‘i and/or other parts of the world." Physical: Mowing and grazing control the spread of L. japonica, however, this does not eradicate it. Prescribed burns remove aboveground vegetation and reduce new growth but do not destroy roots, which will continue to produce sprouts. Chemical: Chemical control is effective if used in the correct concentration and applied at the appropriate time of year. An effective treatment appears to be a foliar spray of 1.5% glyphosate applied shortly after the first frost. Integrated management: The most effective eradication technique seems to be a combination of both herbicide application and burning. The evergreen nature of the plant throughout its range allows it to photosynthesize longer, providing it with a competitive advantage over other plants that go dormant earlier. But fortunately, this also allows for easier identification, assessment and treatment among dormant native plants.
Location Specific Management InformationIllinois (United States (USA))
Sale of L. japonica is prohibited by the Illinois Exotic Weed Act of 1988. Ku-ring-gai Flying-fox Reserve (Australia)
A habitat restoration project was undertaken with the primary aim of providing a self-perpetuating indigenous roosting habitat for the colony. A secondary aim was to retain the diversity of native fauna and flora within the Reserve and keep the regenerated vegetation compatible with native bushland
in northern Sydney. The project was undertaken in three phases extending from 1987 to 2000. An evaluation of results after this period shows that native plants were regenerating and level of weed maintainence required was on the decrease.
Weed control treatments included manual removal, precision herbicide spraying ‘cut and paint’ and stem injection herbicide treatments for larger woody weeds and climbers. Supplemental planting of endemic species was also undertaken. The exotic vines Anredera cordifolia, morning glory (Ipomoea indica and I. purpurea), balloon vine (Cardiospermum grandiflorum) and Honeysuckle (L. japonica) which were smothering the canopy of the trees were removed within phase 1 and 2 areas of the project. Herbicide was applied to kill L. japonica in situ by the stem-scrape method.
Nelson (New Zealand)
L. japonica is designated as a 'Regional surveillance pest' by the the Tasman-Nelson Regional Pest Management Strategy. The strategy has its effect over the combined area that lies within the administrative boundaries of the Tasman District Council and Nelson City Council. The objective of the strategy is to promote the control of L. japonica and improve the public understanding of its impact. TDC (2001) considers the control of L. japonica in sites of high public value the most efficient and effective strategy. Biological control and promoting the voluntary control of L. japonica are seen as the most appropriate control options. Please see Hierarchy of Plant Designations for an explanation of designation terminology. Rangitoto Is. (New Zealand)
In 1995, a weed control programme was initiated on Rangitoto Island, with 72 weed species identified. These were split into three priority classes, each with a management objective. The long term aim for this species is control to zero density (no adult plants). Tasman District (New Zealand)
L. japonica is designated as a 'Regional surveillance pest' by the the Tasman-Nelson Regional Pest Management Strategy. The strategy has its effect over the combined area that lies within the administrative boundaries of the Tasman District Council and Nelson City Council. The objective of the strategy is to promote the control of L. japonica and improve the public understanding of its impact. TDC (2001) considers the control of L. japonica in sites of high public value the most efficient and effective strategy. Biological control and promoting the voluntary control of L. japonica are seen as the most appropriate control options. Please see Hierarchy of Plant Designations for an explanation of designation terminology.
Management Resources/Links
2. Daehler, C.C; Denslow, J.S; Ansari, S and Huang-Chi, K., 2004. A Risk-Assessment System for Screening Out Invasive Pest Plants from Hawaii and Other Pacific Islands. Conservation Biology Volume 18 Issue 2 Page 360.
Summary: A study on the use of a screening system to assess proposed plant introductions to Hawaii or other Pacific Islands and to identify high-risk species used in horticulture and forestry which would greatly reduce future pest-plant problems and allow entry of most nonpests. 4. National Pest Plant Accord, 2001. Biosecurity New Zealand.
Summary: The National Pest Plant Accord is a cooperative agreement between regional councils and government departments with biosecurity responsibilities. Under the accord, regional councils will undertake surveillance to prevent the commercial sale and/or distribution of an agreed list of pest plants.
Available from: http://www.biosecurity.govt.nz/pests-diseases/plants/accord.htm [Accessed 11 August 2005] 5. New Zealand Plant Conservation Network, 2005. Unwanted Organisms. Factsheet Lonicera japonica
Summary: The New Zealand Plant Conservation Network (NZPCN) provides information about New Zealand's most weedy exotic plant species and how to identify them. They also provide an on-line form to record observations of weed occurrences.
This page available from: http://www.nzpcn.org.nz/exotic_plant_life_and_weeds/index02.asp?Filter=l&FilterStatus=1
Lists of Exotic Plant life and Weeds available from: http://www.nzpcn.org.nz/exotic_plant_life_and_weeds/advanced_search.asp [Accessed 19 May 2005] 6. Pallin, N. 2000. Ku-ring-gai Flying-fox Reserve, Habitat restoration project, 15 years on. Ecological Management and Restoration 1(1):10 April 2000.
Summary: Discusses impacts species has had on a Reserve in Australia. Examines chemical and physical control methods and how control has been reached. 10. Ward, B. and Henzell, R. 1999. Gel pruning for the control of invasive vines. ConScience, Department of Conservation, New Zealand.
Summary: Gel pruning is being investigated as an environmentally friendly and effective chemical application system for selectively killing invasive vines. Results Page: 1
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