@shewolfnm,
Ladybugs eat aphids and they will hang around as long as there are aphids. I hate aphids. You poor thing. That white dust is a mold, I believe. Very common on plants that are crowded together. I forget exactly what it's called, but I've experienced it. Isolate those plants and treat them. Soap and water work on aphids and other things, too.
In my experience, homemade remedies are crap. I've had gardens full of cutworms and tried all the natural, organic remedies and still had the problem. They ate my honeysuckle, clematis, daisies etc etc etc to the ground. They even gravitated to my heather and holly (not too tasty or succulent). After 8 yrs of experimenting, going out several times per night every blasted night between Feb and Oct, and cutting them in half (dozens and dozens of them), I tried some nasty product (Diazanon??). It worked. However, you would NEVER use that on anything you'd eat (herbs, tomatoes). Just flowers and shrubs.