Ramshackle reader morgaineotm had some great aphid abatement advice:
Basil. Mrs.Meyers Basil Soap specifically. VERY diluted. Has helped just about all my plants that have been inundated with insects.My youngest son and I rolled out a diluted Basil Soap attack. Next step in the ongoing war, I will follow EarthShaper's great advice:
I had the exact same problem two years ago with my artichoke plant. They all left. What I did last year was to actualize a pre-emptive plan. First I planted flowers the lady bugs would like. Look up insectiary plants. Then I went to my nearest nursery and bought me some ladies...Flashing forward a while later, I started becoming alarmed at the amount of lady bugs (and their larva) in the garden. This year I have the same plan, except I will try to keep flowers around longer and see what else I can attract.
Thanks for the tips.