Although usually gardeners prize their climbing roses and seek to nurture them to produce fragrant displays of foliage and blossoms, sometimes a climbing rose may grow where you do not wish it to grow. When this occurs, you need to find a way to kill the rose and keep it from coming back. This is not an easy task for these tenacious plants, but it can be done with the right herbicide.
Apply the glyphosate when the sun is shining and the winds are calm. Temperatures between 60 and 80 degrees F are ideal for applying glyphosate to plants. Apply the glyphosate during a time of year when the climbing roses are growing energetically for best results because the plant will readily carry the glyphosate throughout its system while it is at peak growth.
Spray the glyphosate spray onto the foliage of the climbing rose, covering all foliage completely. Do not spray to the point that the glyphosate dripping from the leaves, however. A light and even coating is sufficient.
Allow the glyphosate herbicide to work on the plant for approximately one week. Assess the plant after this time to determine how much of the plant is dying. If you find healthy portions of the plant after one week, reapply the glyphosate in the same fashion.
Dig out the climbing rose and detach the canes from any vertical support. Dispose of the dead climbing rose plant and all canes in the garbage.