Honeysuckle (Lonicera japonica) is a vining plant originally used as an ornamental addition to the garden and for erosion control. However, it has escaped cultivation and is a problem in natural areas as well as gardens where it is not wanted. In warmer climates, the honeysuckle vine is evergreen. It produces sweet-smelling white flowers through most of the growing season. Birds eat the seeds of the honeysuckle vine and help spread the vine throughout the countryside. Removing honeysuckle from a hedge is difficult but can be accomplished with an eradication program that involves mechanical and chemical control.
Search for smaller vines that may be growing around the bottom of the hedge but have not grown up into the hedge. This should be done in the summer when the vines are actively growing. They are easy to see because their leaves are distinct from the leaves of common hedges.
Loosen the small vines from the ground that look like they have small root bases and have not grown up into the hedge. Pull all the little plants out by hand after loosening the roots with the hoe. Do not chop the roots into little pieces as you want as much of the root attached to the smaller vines as possible. After pulling out the smaller vines by the roots, put the smaller vines in a pile so you can remove them from the garden by burning or throwing in the trash.
Pull the larger vines out of the hedge, being careful not to disconnect them from their root base. They are easy to pull because honeysuckle is not a clinging-type vine. Once the vines are pulled out, you can see exactly where they are growing from the ground. If a root base is against the roots of a hedge, chop it out by hand, trying not to damage the base or roots of the hedge. Leave the other vines lying on the ground while you prepare the glyphosate solution.
Prepare the glyphosate. Mix a concentrated solution in a garden sprayer or have a pre-mixed solution on hand.
Cut off the honeysuckle vines with the garden shears, leaving 4- to 6-inch stumps. Leave some greenery on the stumps to be sprayed with the glyphosate solution. It is important to spray the fresh cuts on the stumps as well as any greenery immediately after cutting the vines from the stumps so the stumps cannot heal over, preventing the herbicide from entering the honeysuckle root system. Spray within one minute of cutting. Dispose of all pieces of the honeysuckle vine.