Knock Out Shrub Rose as a tree Rose - Knowledgebase Question

Barrington, IL
Question by sherm277
December 4, 2005
Last Spring, we purchased a Knock Out Shrub Rose that is a tree rose. The bulb graft is 2.5 feet above the ground. The Monrovia label on the plant indicates that no special care is required for wintering. The answer to a FAQ also indicated no precautions are required for a Knock Out Shrub Rose; however, anything referring to a tree rose indicates that very special care is required. What should we do for the winter?

Answer from NGA
December 4, 2005


The high grafted tree roses -- including Knock Out -- do need special care in your cold winters. The graft needs to be protected from the cold. The best is to bring it inside to a cool dark place for the winter, somewhere like an attached garage or unheated basement, with temperatures between about 35 and 45 degrees. Bring it inside in late fall once it has gone dormant, and water just enough to keep the soil from going bone dry while it is indoors. Then take it back out in the spring to wake up naturally with the season.

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