Wildflowers are typically grown from seed sown in the fall (mid-Sept thru mid-Nov). Rake in the seeds to loose soil to a depth of about an inch. The more rainfall, the more prolific the flowers. If in a landscape, water regularly to establish the seeds. The most common ones include Mexican gold poppy, purple owl's clover, lupine and African daisies.
*Be sure to save your seeds if you have these in your garden! If you are admiring them from afar, ask permission of a neighbor or landowner to harvest seeds. Once the plant dries out, pull it out, bend the stalk or cut to the ground. Shake the mature stalks into a paper bag. Label your seeds, share with friends and store for next year.