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common name: Buenos Aires Verbena, Brazilian Verbena, Purple-Top Vervain
synonyms: Verbena patagonica
growth rate: fast
growth habit: erect
leaf colour: green
flower colour: purple
main season: Summer
dry soil, moist soil, sandy soil
preferred soil pH: alkaline
minimum temp: -4°C
USDA zone: 9 to 10
Sparsely leaved, upright branching, wiry stems carry small heads of lilac-purple flowers, which persist over a long period.
Well drained soil in full sun. Needs a mild location to over-winter, but can be treated as on annual.
From seed. May self-seed in favourable conditions.
Valuable for providing height in borders and other situations, but without creating a dense screen. The wiry stems give a light, airy and transparent effect.
Attractive to butterflies.