This is the ubiquitous butterweed. In Louisiana it blooms in late winter / early spring usually in swampy areas, ditches, and wet areas of yards. They can be seen everywhere cheering on the coming of spring. I don't know anyone who actually cultivates these weeds or plants them in a bed, but they still are welcome to grow in my yard anytime they please. Some of the other common wildflowers seen in my area during spring are fleabane, dandelions, various clovers, henbit (which I hate!), thistles, sowthistle (another one I hate), and wild blackberries. What are some spring wildflowers in your area?