Common Name: Tall Verbena, Purpletop Vervain or Purpletop Verbena, South American verbena, Brazilian Verbena or Brazilian Vervain, Upright Verbena. Scientific Name: Verbena bonariensis. Family: Verbenaceae. Genus: Verbena. Height: 36-48 in. (90-120 cm). Spacing: 15-18 in. (38-45 cm). Flower color: Rose-violet, lavender. Plant type: Perennials. Flowering time: June - To frost.
Verbena bonariensis (Tall Verbena or Purpletop Vervain) is a member of the verbena family. It is native to South America. Purpletop verbena is an erect, clump-forming perennial, widely branched stems. It can grow to 4 ft (120 cm) tall and can spread to 3 ft (90 cm) wide. Leaves are ovate to ovate-lanceolate with a toothed margin and grow up to 4 in (10 cm) long. The flowers are in tight clusters located on terminal and axillary stems. Verbena bonariensisare excellent for annual borders and mixed herbaceous borders.