Willowleaf Verbena is a tall, airy perennial that adds height and movement to sunny gardens. From midsummer through fall, slender, branching stems rise above the sparse foliage and carry rounded clusters of vivid pinkish-purple flowers. Its see-through growth habit allows other plants to remain visible, making it an excellent choice for layered borders and naturalistic planting designs. The flowers attract butterflies and other pollinators, while the plant may self-sow to return in suitable garden conditions.