I love wildflowers in my backyard. I just scattered the seed all over and left it alone. The next spring, all these beautiful flowers came up. It was very gratifying, and something of a surprise, since I didn't know exactly what all the varieties were that were in the assortment I bought.
The yard was a lovely carpet of color for a few weeks, and I so enjoyed seeing all the flowers come up. A friend said many of them will probably re-seed themselves and they should come up on their own again. If they don't, I will certainly scatter more seed!