I didn't find that to be effective here, although I prefer to use organics when possible. Have sprayed recently with Malathion and that took care of the aphids.

I just got my copy of The Daylily Journal today and the article Mike Huben did which includes a very gruesome photo of aphids crawling in masses on daylily foliage and scapes made me cringe.
I am definitely going to get something as a preventive as I know whatever I use, it will also kill any thrips when the time comes.

Any thing that you can use on roses will help with thrips and aphids on daylilies.

The aphids were horrible this spring. Usually a blast of water will dislodge them, but not this year. I just noticed that even a container of pansies was swarming with them. I've never seen them on pansies before. Before the daylily foliage was totally disfigured by the 2nd round of aphids I blasted them with a spray can I had of insecticide for roses. You have to watch the temperature (not too low or too high) on these insecticides, but it seems to have done the trick for now. Of Course there's still time for round 3 of aphids to come. Warm winter = lots of bugs in spring. I even have spider mites beginning to rear their ugly heads.......Maryl

I use Bonide Brand Systemic Insect Control for thrips on daylilies but it would work just as effectly on Aphids.

It's been almost a week since I sprayed the insecticidal soap, and it seems to have done the trick. If I find that I need the 'heavy artillary' after all, I have all your suggestions; thank you.