One of the best plants I have ever seen for attracting beneficial insects is the east coast native mountain mint, Pycnanthemum muticum. There are several other species, as well, that will probably also work. They are such tiny little flowers, but work amazingly well. And the mint is also one of the strongest ones I have ever smelled. Beware, however, they are mints and spread quite well. Don't let that deter you, just keep an eye on it and give away what you pull.
Here is something I have tried for many years, but more so this year. I had read that potatoes repel bean beetles, and beans repel potato bugs. So I thought the same might hold for beans and tomatoes. I planted pole beans and tomatoes in a long row, and let them intertwine. I just now noticed my first bean beetles, and no potato bugs anywhere, so it seems to be working. In other years, the bean beetles destroy the beans. Spider mites on the beans were a problem, but the beans are still surviving and producing, so I can tolerate that.
