On July 4th celebrate the holiday by planting a seed wherever there is a gap in your garden. Follow the directions on the seed packet. (For zinnia seeds I have had good luck with soaking the seeds overnight and then planting the next evening.) You will be surprised at how much can grow between July 4th and the first frost.

Below is a photo of flowers from my garden cut for a late August party. Zinnias were started from seeds indoors and planted in late May.