Knockout Rose Bushes
Q.

Should I replace with another knockout rose?

Zone Southaven, Mississippi | Anonymous added on October 23, 2019 | Answered

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?

A.
A.Answers to this queston: Add Answer
GKH_Susan
Certified GKH Gardening Expert
Answered on October 24, 2019

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

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