I love orange and yellow flowers, such as calendula and nasturtiums (as well as yellow petals of dandelions and sunflowers), but blue flowers and lavender flowers are amazing too (here are 7 culinary ...
One of the easiest ways to get that desirable wild look in your garden is to include plants that will drop seeds and come back on their own. They can be annuals or perennials. Think zinnias, calendula ...