Here is a link to an article I wrote about winter prep/care for rosebushes that would apply to Knock Outs as well. I am in Colorado. Link: https://www.gardeningknowhow.com/ornamental/flowers/roses/roses-winter-care.htm
Answered on October 22, 2016
Was this answer useful?00
Looking for more?
here are more questions about...Hyacinth Plant