I have a large patch of vinca, the grass is growing throughout. Is there a product that will kill the grass and not the vinca?
You have to keep pulling at it, over and over. The thick mat of vinca makes it impossible to dig the grass out. If there are comparatively discrete sections of almost solid grass you could dig those out, vinca and all and let the vinca come back in from the sides. Or try spraying those parts with appropriate herbicide.
this is a grass only herbicide. it works great and you can spray it over your vinca without harming it. check out the link http://www.greenwoodnursery.com/PDF/grassgetter.pdf
