![]() A 1.5- to 2-percent solution (2 to 2.6 ounces of Roundup/gallon water) applied as a spray to the foliage will effectively eradicate Japanese honeysuckle. Glyphosate herbicide (tradename Roundup) is the recommended treatment for this honeysuckle. This condition allows managers to detect the amount of infestation, and allows for treatment of the infestation with herbicides without damage to the dormant vegetation. ![]() Herbicide Treatmentīecause Japanese honeysuckle is semi-evergreen, it will continue to photosynthesize after surrounding deciduous vegetation is dormant. By reducing honeysuckle coverage with fire, refined herbicide treatments may be applied, if considered necessary, using less chemical. Repeated fires reduced honeysuckle by as much as 50 percent over a single burn.Ī previously burned population of honeysuckle will recover after several years if fire is excluded during this time. In fire-adapted communities, spring prescribed burns greatly reduced Japanese honeysuckle coverage and crown volume. While grazing and mowing reduce the spread of vegetative stems, prescribed burns or a combination of prescribed burns and herbicide spraying appears to be the best way to eradicate this vine. Japanese honeysuckle also may alter understory bird populations in forest communities.Įfforts to control Japanese honeysuckle infestations have included the following methods: mowing, grazing, prescribed burning and herbicides. It may become established in forested natural areas when openings are created from treefalls or when natural features allow a greater light intensity in the understory. ![]() This aggressive vine seriously alters or destroys the understory and herbaceous layers of the communities it invades, including prairies, barrens, glades, flatwoods, savannas, floodplains, and upland forests. New vines also develop from underground rhizomes, and vegetative runners can sprout where the nodes (stem and leaf junctions) contact the soil. Birds eat the fruits and distribute the seeds into fields and other areas. Fragrant white flowers bloom from May through June and develop into purplish-black fruits. It climbs shrubs and trees and often dominates tree canopies. Japanese honeysuckle spreads along the ground, forming dense mats. It is found in numerous areas across Missouri. First introduced in 1806 as an ornamental ground cover, it slowly escaped cultivation and became widely established by the early 1900s. Japanese honeysuckle ( Lonicera japonica) is a perennial semi-evergreen vine native to Japan.
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