Answer: Sadly, you discovered the hard way that Round-Up is a non-selective vegetation killer. It kills on contact and is translocated down to the roots of the plant. The good news is that it doesn't move in the soil, so if you keep the spray off desired plants, they won't be affected. There's nothing you can do for plants sprayed with Round-Up - it is pretty effective in killing on contact. However, if some plants are only showing some symptoms, you can cut those parts off the plants. With any luck, the roots will be unaffected and the plants will recover. Hope so! It's too late this time, but next time you decide to use a powerful herbicide, be sure to read and follow the label directions and be sure to protect the plants by placing a cardboard box over them when spraying in the vicinity.
Best wishes with your landscape!
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