How do you kill weeds in myrtle?

Mulching, removing, spraying, and using landscape fabric or mulch are ways to kill weeds without killing the myrtle among which the weeds are growing. Removal can be done -- but carefully so as not to damage or destroy the woody plant's body parts -- by hand, hoe, rake, or shovel. Spraying must involve a non-residual, specific, target herbicide so as not to adversely affect the Myrtus genus member in question.