I'm going to add my suggestion although I'll probably be down voted for it but here goes.
The trouble with getting rid of aphids is they come right back. All it takes is a few winged female aphids to land on your plant and in a few days, there may be a hundred or more and it only gets worse from there.
Aphid Pests explains:
The winged adults light on plants ready to give birth, which, mostly in greenhouses is done viviparously — in other words, they bear wingless living young, skipping the egg-laying stage entirely. This gives aphids a unique time-saving advantage. To further compound the speed in which aphids can multiply, the nymphal or immature stages are entirely female and then reproduce further parthenogenetically, which means they have no need to mate. Adding insult to the grower’s injury, the nymphal stages are born with the next brood within them already, a condition called paedogenesis. To aphids the combination of these abilities spell exponential growth potential...
When I find aphids on my plants, it's often the plants that are growing quickly with succulent tender new growth. Aphids aren't usually found on older and less 'juicy' stems and leaves. I'd immediately start squishing them on the plants and leave their dead bodies behind. Sometimes ants would be crawling among the aphids, tending them for the sweet honeydew aphids excrete. Yes, it's really aphid 'poop'.
Years ago, I read that the squished dead bodies of insect pests (e.g. aphids) give off some signal thought to be chemical that discourage other aphids from the plant. (I can't remember the source.) I really can't say if it's true but it seems to work for me. Where the small black ants were, I'd squish a few of those too as a warning for other ants and aphids. One shrub rose I had was particularly bothered by aphids with their ant herders. Squishing aphids and ants repel them for a couple of weeks unless it rained enough to wash the chemical scent off. I only needed to do this a few times in the growing season for it to be effective.
If you decide to try this low tech method, remember to squish them gently in order not to crush your plant's tissues too. The aphid bodies are very soft so it's easy to do.