I am really loving Zinnias this year. It is my first year growing them from seed. I started them in 4 inch pots in the backyard in April because I was afraid they'd get lost in the garden. Then about 6 weeks later in May I set them out into the ground in the front yard between my roses. My favorites are the Giant Double flowers. The green ones didn't turn out too great. And I don't adore the Cactus Flowered ones as much. The "Thumbelina" variety are really cute and get a ton of flowers.
The only problem so far is with the tall ones. Even though I staked them, they get 3 feet tall and some of the branches get too heavy and break. But usually I see them when they're half broken and laying down. I just cut them and put the good flowers in a vase to enjoy indoors.