If you’re searching for long lasting blooms that perform during the hottest days of summer heat, consider planting the verbena flower. Locate this tough plant where it gets 8 to 10 hours of sun each day. Verbena is not particular about soil, except that it must be well-draining. While the verbena flower is drought resistant, the blooms are improved with regular watering of an inch or so each week. Water verbena plants at the base to avoid wetting the foliage. A limited application of complete, slow-release fertilizer is also a part of verbena plant care.