Purpletop Vervain
Verbena bonariensis
Family: Verbenaceae
Flowering Time: June to frost
Flower Color: rose-violet, lavender
Growth Habit: average, moist, well-drained soils
Zones: 7 to 11
Environment: Full sun to part shade
Plant Height: 2 to 4 feet
Spread: 1.5 to 3 feet
Water: Medium
Maintenance: Low
Native Range: South America
Other uses: Attracts butterflies