Are you growing Zinnias? They're so easy from seed. And there are many varieties to grow. My new favorite is Zinnia Queen Lime. I adore that chartreuse color. I always love green flowers and kooky colored flowers. I'm also growing Carousel, Pink Señorita and Queen Lime Red(which just looks kinda muddy and I'm not including it's pic) and some pink ones that I must not have kept the packet.
Zinnia Queen Lime
Zinnia Pink Señorita
Zinnias are annuals that like full sun. They're started in Spring from seed and grow during the warm months possibly into Autumn. They are native to the Southwestern United States into South America. They like my sandy soil and blazing sun. Try them if you haven't.