Like all rugosas, she's very hardy (zone 3), and that wrinkled foliage that's typical of rugosas makes her disease resistant. In fact, she doesn't like chemicals on her foliage and will drop leaves if you spray her. She's also very thorny, which helps to keep deer away but can be painful for the gardener who doesn't use rose gauntlets. Pruning is pretty much up to you. Cut her back to fit in a border, or let her stand tall as a specimen or hedge.