Beneath desirable shrubbery, cut the vines near the soil line and pull out the vines. Immediately paint or spray the freshly cut vine stumps with a 10% glyphosate solution, but do not allow the herbicide to touch landscape plants.

How do you kill Smilax?

The best approach is a multi-pronged program of cutting, digging, and spraying or painting the plants with herbicides, advises the Lady Bird Johnson Wildflower Center. Trimec herbicide lists only one species, roundleaf greenbriar (Smilax rotundifolia) on its label, but may work on other Smilax species.

How do I get rid of saw Greenbrier?

Remove as little of the vine as possible and be careful not to break any of the stems. Lay the vine on some bare ground or on a piece of plastic. Spray or sponge-apply a 10% solution of glyphosate (approximately 12 ounces of glyphosate / gallon of water, using a product containing at least 41% active glyphosate).