Knockout Rose Bushes

Can I Cut Back My Knockout Roses?

Rosa added on August 2, 2014 | Answered

They were infested with Japanese beetles and their leaves are yellowish.

Share this Question:
Log in or sign up to help answer this question.
Check here if you would like to receive notifications every time this question is answered.
You are subscribed to receive notifications whenever this question is answered.
Answered on August 4, 2014

I would not prune the rosebushes back more than 4 to 5 inches at this point. They are probably very stressed out by the Japanese Beetles attacking them, they need to be kept watered well. I recommend watering them with some water that has a product called Super Thrive mixed into the water along with a little water soluble fertilizer, not as much as you might typically use but about half that amount on the fertilizer. This will help them deal with the shock and stress they are currently under. I would also recommend spraying the rosebushes with either Bayer Complete insecticide or Sevin to help lessen the Japanese Beetle problems.

Was this answer useful?
Looking for more?
Here are more questions about Knockout Rose Bushes

You must be logged into your account to answer a question.

If you don't have an account sign up for an account now.