Ключевые слова: argentinian vervain, bloom, blooming, botany, clusters, clustertop vervain, decorative, flower, flower head, flowering, flowers, fragrant, garden, inflorescence, internodes, landscaping, lavender, nature, ornamental, perennial, plant, pollinatorhost, pretty verbena, purple, purple flowers, purpletop, purpletop vervain, slenderstemmed, summer, tall, tall verbena, verbena, verbena bonariensis, vervain,