I inherited these roses with my new house and I'm trying to rehabilitate them. They were planted too close to a tree so they are competing with the trees roots and getting too much shade. I am planning on transplanting them in the fall, but until then I am doing my best to get them healthier. I pruned them a few weeks ago, taking off the dead canes and as much of the diseased leaves as I felt was safe. Then I gave them water and rose fertilizer and I sprayed them with an organic 3 in 1 rose spray. They have responded by sending up some new growth, much of which is coming up from the roots and at the base of the canes. I was going to leave the growth at the base because the roses are very leggy and I couldn't see a graft line so I thought they might be on their own roots. Here are pics of the bottoms of the plants, sorry they aren't better quality.
Thanks for the help!