While aphids may be disposed of by using insecticides, there are other alternatives. Knock them off the plant with a strong spray of water. Attract birds to your garden to feast on them. Pick them off by hand. If you have only a few roses, picking them off by hand is very easy. The newest buds appeal to aphids the most. Run your fingers along the stem, squishing the bugs as you go. There are other insects that like aphids for a meal, but when you order these they always seem to end up in the neighbor’s garden.