From Family Plot.
Glyphosate will kill the vinca. UT Extension Agent Booker T. Leigh says you should apply the glyphosate in the spring when the plant is actively growing for best results. Because you are applying in a flower bed you need to be very careful to make sure the chemical does not get on any desirable plants.
Subscribe now to Family Plot for more gardening videos like these!
For even more information, go to https://www.familyplotgarden.com