How to get rid of a plant call rose of sharon?

we have this plant all over our backyard we cut them down but they grow back ever year. HIBISCUS ROSE OF SHARON IS WHAT THEY CALL. how do you get rid of them?
How to get rid of a plant call rose of sharon?
follow the second person's advice; dig them up, roots and all. Do not use vinegar in this case! If you can get a tiller in the yard, do so. then every time one sprouts, pull it.; or hire someone to keep at it if you don't want to. Cutting them off will not kill them, only stimulate them. Vinegar won't work well on "woody" plants anyway, only applied directly to leaves of small green weeds, and it must be used with care or you'll kill things and make your soil unable to grow lots of other things.
Reply:You could try vinegar. It kills plants. YOu'd have to be carefull with the surrounding plants. It's cheap and safe.
Reply:You can waste your time trying to dig them up, but there is a better way. Cut them down to the ground, and drill holes into the main trunks. Pour liquid stump remover into the holes and that will take some time to get rid of them, but it works.
Reply:the only way to get rid of them is to completely dig them up, roots and all.
Reply:do not pour vinegar on them this is useless. do not till them up because they grow from the roots and if you till them you will have hundreds of new places for them to grow from. spray the plants in the spring after they have put on a nice leaf but do not wait until the heat of summer sets in and the leaf becomes hard and impervious. use a chemical called remedy or one called crossbow they will kill only the brush but not any grass in your yard.CAUTION THEY BOTH WILL KILL ANY FLOWERS IN YOUR YARD OR YOUR NEIGHBORS SO BE CAREFUL WHERE YOU SPRAY AND WHICH DIRECTION THE WIND IS BLOWING!!! they should both be available at any home and garden store.
Reply:It is funny that you are trying to kill them. Where I live people call me begging to know how to keep them alive! Anyway, tilling and vinegar will do no good because it is a woody plant. Use a selective herbicide in the early spring once they have started to grow. Fertilome weed free zone is my favorite, it kills broadleaf plants but not grass.There are many products like it. Look for the word "selective" or "broadleaf weed killer." It does drift so do it on a completely calm day. Any tiny trace of this on a tomato plant could very well kill it. Good luck!
Reply:You have to till up the soil and kill the roots if you don't get the roots it will keep coming back. Its a very resilient plant and can stand almost any type of trauma and come back so you need to go in and make sure you get all the roots out. I hope this helps