there are weedkillers that can selectivly kill grass, ask in a gardening store.
Weed killers are toxic to you and the environment. Get as much grass out by the roots as you can and mulch like crazy under the phlox. Weed cloth can be purchased in the same store as the weed killer, so can the mulch. Lay down the cloth in early morning or evening and cut slits for the phlox. Gently pull the phlox through the slits, and flatten the cloth as if you were making a bed full of flowers. Mulch over the top of the cloth. Try not to get too much cloth or mulch around the stems of the phlox, that can create several negative situations. The benefit of this over weed killing chemicals is that it's more effective, retains moisture, it isn't toxic to you or any other critters. If you ever decide to grow more phlox or mingle other flowers, push aside some mulch and punch a hole in the cloth.
An herbicide that is specially designed to kill grass will kill the grass growing around your perennials. Be sure to read the label carefully to ensure that it is for grass and will not harm your other plants.
it will make your grass grow but it will not kill weeds=)
If it is a lot of bleach, it will kill the grass.
Long-leaved phlox can be grown virtually anywhere that meets its preferred soil, sunlight, and water requirements. However, naturally growing long-leaved phlox is common in central and western America.
grass growing is a physical change.
The scientific name for smooth phlox is Phlox glaberrima.
phlox/flocks
Phlox glaberrima
creature that feeds on growing grass or herbage?
Phlox subulata
The scientific name of the annual flower Phlox is Phlox drummondii. It belongs to the genus Phlox within the family Polemoniaceae.
There is certain types of grass that kill plants, but normal yard grass will not, it also depends on the plants. But usually its the weeds that kill the plants, not the grass.