Plant field guide
Rudbeckia (annual)
Black-eyed Susan types with golden daisy flowers. Native wildflower favorite.
Growing requirements
- Scientific name
- Rudbeckia hirta
- Sun
- full sun
- Water
- moderate
- Height
- 12 in (30 cm) – 24 in (61 cm)
- Spread
- 10 in (25 cm) – 14 in (36 cm)
- Spacing
- 10 in (25 cm)
- Hardiness zones & minimum temperature
- USDA 3–9; average annual extreme minimum from -40°F (-40.0°C). Hardiness does not predict local frost dates.
- Difficulty
- Not recorded
Planting & seasonal timing
Northern Hemisphere planting months: not yet verified in our database.
Northern Hemisphere pruning months: no calendar months recorded.
For the Southern Hemisphere, these seasonal windows shift approximately six months. Check your local frost forecast, soil temperature, and species requirements; calendar months are not a guarantee of planting safety.
Deadhead for more blooms. Drought tolerant once established. Self-seeds.
Pruning
Pruning instructions are not recorded for this plant.
Fertilizer
Fertilizer type is not recorded.
A fertilizer schedule is not recorded.
Mulch
Mulching guidance is not recorded.