Q.knockout roses
is it ok to water knock roses with lawn sprinklers or do they have to be watered at at ground level only?
MichiganDot
Answered on May 10, 2018
Knock Out roses are mildew and black spot resistant but they still get these problems. No one will tell you that overhead watering is a good idea but roses survive rain, right? If you must, only water in the morning so the sun will quickly dry the leaves.
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