Polar JOy tree rose
I've had the "Polar Joy" hardy tree rose for quite a few years and it has been really great. But now all the lower stems are bare and it just has leaves and buds at the tips. It really isn't very nice looking any more. Do I dare cut the stems way back and hope for new growth and a bushier rose or will that kill the whole plant? I'm in the NW suburbs of Chicago. Thanks so much.