25 Seeds Double Dark Purple Hollyhock Alcea Rosea Deep Violet Double Bloom Hardy Biennial Tall Flower Cottage Garden

These hollyhock seeds produce tall, striking stalks adorned with fully double, deep purple blooms that resemble ruffled pom-poms. A classic cottage garden favorite, this biennial adds dramatic vertical interest to borders, along fences, or as a backdrop for lower perennials.
For best results, sow seeds in well-draining soil in full sun, either directly in early spring or late summer for blooms the following year. These hardy plants tolerate a range of soils, attract pollinators, and make wonderful cut flowers.
Species: Alcea rosea
Variety: Double Dark Purple
Type: Biennial
Plant Habit: Tall, upright, clumping
Sun: Full sun
Soil: Well-drained, moderately fertile
Zones: 3a–9b
Germination: 14–28 days at 60–70°F (15–21°C)
Sowing: Sow on soil surface, light needed; press in lightly
Spacing: 18–24 inches apart
Notes: Self-seeds readily; stake in windy areas