Aphids are the easiest of all the rose insects to get rid of. Because the mother aphid lays her eggs on the rose, and the aphids can't get down. If you spray the plant with water it aphidsfall off and then they can't get back up. You can also squish them with your fingers or just hit the cane and knock them off.

If you don't mind going a chemical route there is also "Insecticidal Soap" this is a diluted special detergent that disolves the waxy body coating on the aphids and in a day or so they lose so much internal moisture that they die. The best alterntive for aphid control is to be on the look out for ladybugs in your neighborhood and to gently put a few on your bushes. They will not completely eradicate the aphids but they will keep them from doing any significant damage to your plants. Actually, I have found that even though the aphid population may look "over the top" to you, the bush is fairly tollerant of them and if you leave it alone, the ladybugs will find the bush eventually on their own and set up a permanent camp. Don't be in a hurry to kill every bug that you see: the ladybug nymphs look nothing at all like the cute spotted beetles. Good luck