Thanks for writing. There are a couple of factors that could be coming into play.
Is your rose in full sun? If it's not getting enough light, it won't be able to bloom. Sometimes shade sneaks up on gardeners; a spot may have been full sun years ago, but over time as trees grow, it gradually gets more and more shady.
Is it a rose that's reliably hardy in your area? Many hybrid roses are grafted onto another rose's roots; if you have an especially cold winter, the top part of the rose can die, and the root part (which is a wholly different rose) starts to grow. Most of these root roses don't bloom very well. If this is the case, your best bet is to start over with a whole new rose.
If it's an old-fashioned rose that blooms only once a year in spring or early summer and you had to cut it back in fall, winter, or early spring, you may have accidentally cut off the flower buds. If this is the case, your rose should bloom next year if it's not cut back.
---Justin, Senior Garden Editor, BHG.com "