The best rose-growing advice that I have for you is this: strong roses are healthy roses.  A good start will take a little care and planning, but your roses will pay you back handsomely.  First, make sure you have a planting site that gives them at least four to six hours of full sun. Next, check that they have some elbow room.  Roses really appreciate good air circulation, which means allowing at least a foot around each plant so air can circulate freely and keep diseases at bay.