I try to use the least intensive approaches first, like spraying the aphids with a blast of water from a hose. If that doesn’t work, a homemade solution of water, oil, and dish soap can be used. I like to use some organic commercial sprays based on essential oils, but those are limiting under hot conditions because they can fry the leaves. Sometimes I like to use a sacrificial plant that I allow to have aphids because the ladybugs and mantises will come into the garden. It’s a delicate balance and quite the challenge!