Well here I am experimenting a bit with my raised bed garden. I planted bush beans, tomatoes and some marigolds in this bed. I've been really impressed how well the marigolds and green beans have helped one another. It's like, "Hey, that really works well!"
Last year my green beans were nearly eaten to the ground by many different leaf munching insects including the grasshoppers. When I planted the marigolds this year, not only have the green beans flourished, but the marigolds are triple the size of the ones planted in other areas. Now I know they truly are friends. :)