Many of my knockout rose bushes are being devoured by aphids and I fear they will never recover. I found a couple knockout bushes on summer clearance. Would I be able to dig up some of the near dead bushes(aphid infested) and plant new ones in their place or might they run the risk of infestation as well?
If there are aphids in the area, the new roses will need to be treated or they aphids will attack them as well. Roses are prone to pests so you’ll need to resign yourself to regular spraying. Neem oil is an organic spray that will get rid of the aphids as well as other insect pests. To protect bees, avoid spraying any flowers that are open and spray early in the day before the bees are active. HERE’S a link to the product…read and follow the directions on the label.