Prune hybrid tea roses, removing weak and crossing stems. Shrub roses are pruned in the same manner as shrubs, taking out one or two canes to the ground each year. Strong, new canes will replace these. Don't lop off tips. Allow them to have arching stems to the ground and a graceful shape.
Miniature roses tend to grow in a tangle.
Use tiny snips to give them air between each branch, but don't go overboard on pruning. Tie them to their support and soon little lateral shoots will appear. These are the stems that bloom. Sometimes cities don't get around to it until June. Trunks develop a green tissue under wrap instead of the tough bark that is needed to weather this climate.