Purpletop Vervain is a tall, airy flower that rises 4 feet high on wiry, branching stems crowned with clusters of fuzzy violet flowers that butterflies cannot resist. Also known as Brazilian Vervain, this open-pollinated annual thrives in full sun across hardiness zones 7 and warmer, blooming prolifically for 90 days until frost arrives. Its delicate, branching form and prolific flower production make it an exceptional cut flower, and it rewards deadheading with continuous blooms throughout the season. In mild climates, it readily self-sows, returning year after year without replanting.
Full Sun
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7-7
48in H x 24in W
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High
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The fuzzy violet flower clusters sit like tiny landing pads atop incredibly tall, airy stems, creating an ethereal quality that looks far more delicate than the plant's robust nature suggests. Butterflies flock to these blooms, making it a living pollinator magnet that transforms any garden into a haven for nectar-seeking insects. As a cut flower, it holds its own in arrangements with surprising elegance, and deadheading keeps the blooms coming until the first hard frost.
Purpletop Vervain excels as a cut flower, where its tall, branching stems and long vase life make it valuable for fresh arrangements. In the garden, it serves as a dedicated pollinator plant, drawing butterflies and other beneficial insects that support the broader ecosystem. Its height and airy form also work well as a backdrop plant, creating vertical interest without blocking views of shorter bloomers.
No timeline data available yet for this variety.
Start seeds indoors 8 to 12 weeks before your last spring frost. Surface sow the seeds, pressing them gently into the soil surface without burying them, as light is essential for germination. Keep the soil consistently moist but not waterlogged during the germination period.
Harden off seedlings by gradually exposing them to outdoor conditions over 7 to 10 days before transplanting. Move plants outdoors after the last frost date, spacing them 18 inches apart. These plants tolerate cool spring conditions but perform best once soil has warmed.
Deadhead spent flower clusters regularly throughout the growing season to encourage continuous blooming and maintain a fuller, bushier form. No hard pruning is necessary; the plant's naturally branching growth habit creates an attractive shape on its own.
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“Purpletop Vervain hails from South America, earning its alternate name Brazilian Vervain. It arrived in gardens as a tender perennial prized for its ability to bloom prolifically in warm climates and its irresistible appeal to pollinators. In colder regions, gardeners learned to treat it as an annual, starting seeds indoors in late winter. The plant's willingness to self-sow in place made it a favorite pass-along plant, spreading through gardens and seed-saving networks where gardeners appreciated its reliability and pollinator value.”