Question: how when to prune roses?
Answer: Spring: Major pruning should be done in early spring, after the last frost in colder climates, by following the 8 Basic Pruning Steps below. ... 
Summer: ... 
Fall: ... 
Remove all remaining leaves. ... 
Start with dead wood. ... 
Open up the center of the plant. ... 
Remove any thin, weak growth. ... 
Prune the remaining canes.