Every landscape in the Southwest should have at least one of these low-growing, drought tolerant beauties. They thrive in arid environments, greeting the scorching desert heat with clusters of pink and yellow flowers that butterflies find irresistible. From spring through fall, multi-colored blossoms open with bright pink and yellow flowers that darken with age. This hybrid is a short but shrubby lantana, with a spreading habit. Irene Lantana looks great in containers or borders, and it grows well along curbs and walkways.