Blacknight Hollyhock Seeds – Flower Plant
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Blacknight Hollyhock Seeds
Blacknight Hollyhock is a tall flowering biennial known for its deep dark blooms and upright architectural growth. It is suitable for cottage gardens, borders, pollinator gardens, and ornamental landscape plantings where vertical interest and seasonal flower displays are desired.
Key Features
Deep Dark Flowers
Produces striking dark blooms that create dramatic garden displays.
Tall Upright Growth
Develops strong vertical flower spikes suitable for back borders.
Landscape Versatility
Suitable for cottage gardens, borders, and ornamental plantings.
Pollinator Attraction
Flowers help support pollinator-friendly garden environments.
Product Highlights
Specifications
| Scientific Name | Alcea rosea |
| Common Name | Blacknight Hollyhock |
| Seed Type | Flower Seed |
| Growth Habit | Upright Biennial |
| USDA Zones | 3–9 |
| Planting Season | Spring, Fall |
| Growing Season | Spring Through Summer |
| Sowing Season | Spring, Fall |
| Sowing Months | March–May, September–October |
| Germination Time | 10–21 Days |
| Germination Conditions | 65–75°F (18–24°C) |
| Sunlight | Full Sun |
| Soil | Well-Drained Fertile Soil |
| Watering | Moderate |
| Mature Size | 5–8 ft Tall × 2–3 ft Wide |
| Plant Spacing | 18–24 in Apart |
Growing Guide
Suitable For Borders, Cottage Gardens And Pollinator Landscapes
Blacknight Hollyhock is grown for its tall flowering spikes and dark ornamental blooms. It is suitable for cottage gardens, mixed borders, pollinator-friendly plantings, and landscape displays where height and seasonal color are desired.