How can I effectively prune rugosa roses to promote healthy growth and abundant flowering?

To effectively prune rugosa roses for healthy growth and abundant flowering, start by removing dead or diseased branches. Then, prune back any crossing or crowded branches to improve air circulation. Cut back the remaining branches by about one-third to encourage new growth and more flowers. Make clean cuts at a 45-degree angle just above a bud facing outward. Prune in late winter or early spring before new growth begins.