Verbena bonariensis is a tall and lacy annual that is used more in Europe than in the United States. This drought resistant purple flower can be grown from seed if you have warm soil and want to wait until the end of summer for the plants to mature. Buying starts at a local nursery would be more practical because you will get to enjoy the tall, wiry plants earlier in the summer and into the fall. In English gardens this annual is used as a summer hedge to separate garden areas. It is like looking through a window covered with lavender lace curtains when you view a scene through a planting of this old fashioned flower. Keep growing, Marianne Binetti