These are some general tips for pruning roses.
But what you really need to know is on the page called Pruning Roses...
In the meantime, keep these tips in mind because no matter HOW ROSES GROW.. they still apply.
Pruning encourages roses to put out new growth and more blooms, but you knew that.
You won’t kill a healthy rose by bad pruning; mistakes usually grow out in a season or two.
Better to prune than not (but alas, there is no one general rule for all roses or for the same type or season or condition) - of course there isn't.
Spring: wait till Forsythia blooms
In the spring, remove all remaining leaves so you can see the canes; it also removes pests or diseases that may be overwintering there.
Take out the Dead: because it feels good and there is no mistaking it - you can see it...
Use anvil pruners for this.
Not sure it's dead? Gently scratch the bark with your fingernail - living = green; dead = brown.
Either cut back to a green stem above a bud-eye or back to the ground
Crossing canes or ones that can rub and cause damage leaving the cane open to disease or burrowing insects.
Remove thin or weak growth... twiggy bits or thin as a pencil (unless the rose is a mini or a small ground cover rose.
Height: your choice or fits with your garden.
In the back of the border, you might want it to be taller.
(Hybrid tea = the lower you prune, the bigger the bloom... and longer the stems; you'll get more blooms but they will be smaller.
(short= bigger; tall= more)
Clean up branches and leaves from ground...
New modern roses are not prone to disease so no real need to clean out the centre except 4D’s
You can "groom" or trim them any time during growing season.
It's hard to kill a rose by pruning it but take that with a grain of salt; your roses want to live so pruning properly can only make them better.
This photo by Gail Trimble of the Marin Rose Society shows very clearly the best cut.
If you can, make a cut with a downward angle. This was thought to keep the cane from rotting - but it is often not possible when pruning deep inside the bush.
(In the past few years, much research and work have created new, hardy, easy-care roses bred to resist disease.. so the downward angle is really more important for those lovely old fashioned Tea Roses).
This doesn't mean you don't have to be careful but it does mean the new roses will tolerate more.)
More importantly, decide which direction you want the branch to grow and cut just above a bud that faces that way and the branch will grow.