Yes you should either spray them with a weed killer or simply use a shovel and dig up the sod layer, that is what I do each time I expand my flower beds. No more weeks. You can also use a recycled rubber mulch which lasts for 10 years, cuts way down on the mulch work.
It takes about two months for covered grass to die. Covering grass with cardboard and organic mulch is a good way to effectively kill grass and create rich soil at once.
no, it is very healthy for the grass actually, use it as much as you would before
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.
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.
A blade of grass cannot kill you, even in a tornado, but the tornado can kill you.
Usually mulch is used to cover areas where weeds grow. These weeds, if allowed to grow, will typically sap nutrients away from your desired plants. Using mulch will actually help your plants stay alive if applied correctly to stop weeds from growing and choking the roots of your plant. As long as you don't smother your plants with mulch, it should not kill them.
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.
Yes, the acid from the cat urine will kill grass.
yes because the chemcials will kill the grass or at least discolor it.
it will make your grass grow but it will not kill weeds=)
You will kill all your plants. Salt is not good for them.
How can bermuda grass be removed?