Do weeds have bark?

Yes, weeds have bark if they're nuisance shrubs, trees or woody vines. Bark refers to the outer covering of roots and stems in woody plants such as woody vines, trees and shrubs. Weeds refer to plants that grow where they aren't wanted or to plants whose usefulness is unknown or negated by their harmfulness. Therefore, a weed has bark when it's a question of a shrub, tree or woody vine growing where you don't want it or where it's causing harm to the environment.