Aphids are one of the most common insects known to attack roses. The most common variety is the rose aphid (Macrosiphum rosae). You can use common ingredients in your home to make a spray to stop the attack of the rose aphid and other members of its aphid family.
Start with a first line of defence. Give your rose bushes a medium to hard spray of water from your garden hose to get rid of the aphids.
Make a spray that only contains dish detergent and water. Use a ratio of 2 tbsp of dish detergent for every gallon of water. The ingredients should work to dry out the aphids and kill them.
Basil Tea Spray
Take a 1-gallon container and fill it with water and basil clippings. Let the container "steep" for a week. Add 2 tbsp of liquid detergent and fill a spray bottle. Store and use this spray as a deterrent and preventive measure -- versus a solution once roses are infested.
Kitchen Cupboard Combination Spray
Use common "kitchen cupboard" ingredients to make a spray. Use a spray bottle and mix one-quarter tsp of vegetable oil, one half tsp of dish detergent and 1 qt. of water. Spray the roses, continually, every ten days.