How to destroy this plant
I am building a fence.
Previously, when the fence was just chainlink, for privacy, neighbors planted some plants which were vine-like (i am not sure since i am new to gardening). The people building the fence said they pruned everything but i feel like the roots are still in earth and can come back next year. It will be annoying to remove it after the pickets have been installed. Attached is a small growth out of a root that we thought was dead.. What can i do to make sure i completely killed the plant. I dont know where the main root is so i dont want to dig the entire yard..
Please help !! Thanks in advance