USDA Zones 7–10 are winter hardy for this tender perennial. Develop as an annual in full sun to part shade in average, damp, well-drained soils in St. Louis. Weak soils are tolerated as long as drainage is adequate. After the last frost date, seed can be sown directly in the greenhouse. Start seeds indoors 6-8 weeks before the last frost date for an earlier bloom.
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Scientific Name: Verbena Bonariensis
Common Name: Purpletop Vervain
Plant Type: Perennials
Zone: 7 to 11
Native Range: United States, California
Full Growth Height: 36-48 "
Spacing: 18-36 "
Exposure: Full Sun to Partial Shade
Blooming Season: June to Frost
Flower: Showy, Cut Flowers, Plant of Merit
Pollinators: Butterflies, Humming Birds
Flower Color: Rose Violet, Lavender
Tolerate: Deer, Drought, Rabbit
Water Requirement: Medium
Soil Type: Chalk, Clay, Sand, Loam, Well-Drained, Moist
Soil pH: Alkaline, Neutral, Acid
Uses: Gravel and Rock Gardens, Informal and Cottage Gardens, Prairies and Meadows