Hollyhock Seeds – Black

Hollyhock ‘Black’ (Alcea rosea) is a striking garden favorite known for its tall spikes of deep, near-black blossoms. These dramatic flowers create a bold statement in any landscape, adding vertical beauty to fences, walls, and cottage gardens. Blooming over a long summer period, Black Hollyhocks attract pollinators like bees and butterflies while providing a timeless, classic appeal. This variety is easy to grow and performs well in sunny garden spots with well-drained soil.

Features:

• Produces tall spikes of dark, almost black, velvety blooms.

• Attracts bees, butterflies, and other pollinators.

• Perfect for cottage gardens, borders, and vertical accents.

• Long blooming period throughout summer.

• Can be grown as a biennial or short-lived perennial.

• Easy to cultivate and low maintenance once established.

Specifications:

• Scientific Name: Alcea rosea ‘Nigra’

• Common Name (US): Hollyhock

• Plant Type: Biennial or short-lived perennial

• Bloom Color: Deep maroon to nearly black

• Plant Height: 5–8 feet (150–240 cm)

• Sunlight Requirement: Full Sun

• Soil Type: Fertile, well-drained soil

• Watering: Moderate; keep soil evenly moist but not soggy

• Germination Time: 10–14 days

• Days to Bloom: 120–150 days after sowing

• Sowing Method: Direct sow outdoors after frost or start indoors 6–8 weeks earlier

• Spacing: 18–24 inches apart

• Growing Season: Spring to Fall

• USDA Hardiness Zones: 3–9

• Best Planting Months (by Zone):

  • Zones 3–5: May to June

  • Zones 6–7: April to May

  • Zones 8–9: February to March

• Flowering Period: Mid-summer to early fall

• Use: Garden borders, fences, cottage-style plantings, and background landscaping