10+
Perennial rudbeckia seeds produce hardy, long-lasting flowering plants with upright, clump-forming growth and branching stems. These plants are well suited for garden beds, borders, and naturalized plantings, where they establish reliably and provide seasonal flowering. They grow best in full sun and adapt to a wide range of well-drained soils, including moderately low-fertility conditions. Once established, perennial rudbeckia tolerates dry periods and requires minimal maintenance, making it suitable for low-input landscapes.
Features
- Hardy perennial with upright, clump-forming growth
- Suitable for borders, beds, and naturalized areas
- Adapts to well-drained soil types
- Tolerates dry conditions once established
- Performs well in full sun environments
- Low maintenance growth habit
Specifications
- Scientific Name: Rudbeckia spp.
- Common Name (US): Black-Eyed Susan
- Seed Type / Variety: Perennial variety flower seed
- Growth Habit: Upright, clump-forming perennial
- USDA Zones: 3–9
- Planting Season: Spring or fall
- Growing Season: Summer to fall
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Sowing Season:
- Spring: March to May
- Fall: September to October
- Germination Time and Conditions: 7–21 days at 18–22°C with light moisture
- Sunlight Requirements: Full sun
- Soil Requirements: Well-drained, loamy or sandy soil
- Watering Needs: Low to moderate; drought tolerant once established
- Mature Plant Size: 60–120 cm height, 45–60 cm spread
- Plant Spacing: 30–45 cm apart
