How to Grow Verbena:

Transplanting: Transplant when there are at least two sets of true leaves
Spacing: Space 12 inches apart in full sun
Soil: Site in a light, rich, well-drained soil. Allow the soil to dry out between waterings
Temperature: Site in full sun, provide 55° nights
Additional Care:  As a group they are very tolerant of drought, exposure, wind, heat, humidity, and pollution. The perennial types can get straggly, so cut back hard in early spring or resow seeds each year.