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Japanese Honeysuckle
1. Japanese
Honeysuckle
(Lonicera japonica)
Danelle Haake
Litzsinger Road Ecology Center
May 17, 2012
2. Lonicera japonica
History
Native to Japan and Korea
Horticultural Introduction (early 1800s)
Ornamental
Erosion Control
Wildlife (deer and birds)
6. Lonicera japonica
Characteristics & Identification
Flowers
April to July
White to yellow
Very fragrant
Fruit
Single berries
Green (unripe) to
black (ripe)
9. Lonicera japonica
Control
Foliar spray
1.5-3% glyphosate
Fall application
Cut-and-paint
25% glyphosate
Remove climbing
vines
Fire
Limits spread, but
does not eliminate
Hand pull
12. Lonicera japonica
References
James Miller. Non-Native Invasive Plants of
Southern Forests. USDA Report SRS-62, 2007.
Shaw Nature Reserve. Control and Identification of
Invasive Species. SNR, 2008.
Plant Conservation Alliance, Alien Plant Working
Group:
www.nps.gov/plants/alien/fact/pdf/loja1.pdf
USDA PLANTS Database:
plants.usda.gov/java/profile?symbol=LOJA
Missouri Department of Conservation:
mdc.mo.gov/landwater-care/invasive-species-
management/invasive-plant-
management/japanese-honeysuckle-control
Notes de l'éditeur
Lives in widely varied habitats. Not found in the northwest quarter of the country – too cold and or too dry.
Oblong to ovate leaves on short stalks.Leaves sometimes lobed, especially near the ground in areas where the vines are climbing.
Does it flower as a ground cover?? I have not seen it do so, but it could…5 stamens and 1 pistilBerries are roughly pea-sized
Spread by rhizomes, re-rooting at vine nodes where they contact soil, and seed dispersal by birds and other wildlife.
The vines of L. japonica wind tightly around the trunks of trees and shrubs, potentially girdling the tree.As with bush honeysuckle, the foliage of vining honeysuckle begins early and stays on after most other species have already dropped their leaves, decreasing the light available to native species.
-Spray in the fall once nearby vegetation is dormant. In our experience at LREC, spring spraying is not very effective. Others have found a 1.5% solution of glyphosate to be effective, but we often spray both L. japonica and E. fortunei at the same time, so we are usually spraying with a stronger solution. We do not use the herbicide formulation RoundUp at LREC due to concerns about its impacts on aquatic life. Glyphosate is sold without the added surfactants under the names Rodeo and Accord. -Other systemic herbicides like triclopyr (Garlon 3A) have also been shown to be effective. Crossbow, a formulation of triclopyr and 2,4-D, is also a very effective herbicide that controls Japanese honeysuckle.-Herbicides that have given poor control results or that are more persistent in the environment than other types are picloram, annitrole, aminotriazole, atrazine, dicamba, dicamba 2,4-D, 2,4-D, DPX 5648, fenac, fenuron, simazinetriclopyr.-Fire will knock back honeysuckle and help contain it, but will not remove the roots and therefore will allow re-sprouting.-Hand pulling is effective on small patches in moist soil, as long as roots are also removed. Revisit periodically to deal with any re-sprouts.
These photos were both taken last week in wooded edge areas adjacent to prairies. The one on the right was treated with 3% glyphosate last Nov.
This area has had many of the climbing vines removed, but Lonicera is still plentiful as a ground cover. *click* This is another area that was treated last fall. Notice the woody vines remain, but they have not sprouted.