In light of Ronda's beautiful photo, I have been meaning to ask this question about Julia Child, as well as many other roses. When a couple of experienced growers came over last summer, they mentioned that one of my minis (my only grocery store rescue, which was a gift) did not have air in the center, i.e, the center was all foliage. They told me to clear out some room in the middle or I would be more prone to spider mites and other diseases.

When I bought my 2 Julia Childs, there was no "room" in the center. Am I actually supposed to cut out canes in the middle to make room for air movement?