Summer pruning of roses can be just above the new growth if you are talking about side shoots emerging from a rose cane.  If there is no rose blooming you can shorten any cane or branch just above a joint or node where leaves emerge. The orange roses is my garden are either the orange and yellow peace roses or the deep salmon Barbara Bush rose. Pruning always stimulates growth so don't prune in late summer as the new growth could be nipped by an autumn frost. Keep growing, Marianne Binetti