While looking for some plants that I can use in or round-about to discourage aphids and/or white flies, I'm wondering if the Pyrethrum or its dried leaves & flowers sprinkled on the soil would do any good. (I plan on starting the plants.)

This past year my tomato and cucumber plants were invaded by the white flies. I don't know what it would have been like if I hadn't used Neem, but those little things just wouldn't be discouraged.