Knockout Rose Bushes
Q.

Caring for Knockout Roses Damaged by Japanese Beetles

Zone MIDWEST | RGFELDER added on June 28, 2012 | Answered

After the beetles have eaten about half the rose leaves and have been killed by Sevin spray, should the bushes be trimmed back or what?

    A.
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    roseman
    Answered on June 29, 2012

    Leave them alone for a while and see where the new growth comes in at. Then you can prune back as needed to re-shape the rosebushes. Pruning them back now would add more stress to them and would also probably be far more pruning than is needed. If you can find a product called Super Thrive where you are, mix a tablespoon or two of that with some root stimulator in a big watering can. Water the rosebushes with that mix a couple times about 10 days apart. It helps with shock and stress.

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