Should I replace with another knockout rose?

Question

We have 4-5 knockout roses facing west at our north Mississippi home. One has been replaced twice due to disease and dying. Others are fine. Is bad soil to blame? Should we replace again? Pull out all roses and replace with other shrubs? If so, what?

Answer 1

It could be that the disease is within the soil and is affecting the new plants. You can solarize the soil where the dying bushes were or plant a different shrub. Often, disease is host specific and won't affect a different plant.

https://www.gardeningknowhow.com/garden-how-to/projects/how-to-solarize-garden-beds-to-eliminate-garden-pests-in-the-soil.htm

https://www.gardeningknowhow.com/garden-how-to/gardening-by-zone/zone-8/flowering-shrubs-for-zone-8.htm