When is the best time to prune overgrown rose bushes? Spring ok?

Its definitely better to prune when its not wet and damp outside!

That depends on your location. Here is a site that will give you the proper answer. www.rose-gardening-made-easy.com/when-to-prune-roses.html

February

Prune them early spring or late winter when the they just start to bud. Don't prune more than a third of the size of the bush.

We always prune our rose bushes back in late January. Living in So Cal we don't get snow, so best check with your garden nursery for your location.

i'm in the northeast....anytime in a month with a (R) in the name of the month....that means all winter is okay till May...and not again till Sept/Oct