Asteraceae
Rudbeckia hirta var. hirta
Rudbeckia hirta var. hirta var. hirta
Also known as Rudbeckia serotina f. gigantea, Rudbeckia hirta f. flavescens, Rudbeckia amplectens, Rudbeckia hirta f. homochroma
Flowering Plants · Native Plants · Black-Eyed Susan · Native Wildflower · Rudbeckia · Pollinator · Daisy · Summer Bloomer · Meadow · Cottage Garden · Perennial · Yellow Flower
Black-eyed Susan is a cheerful, easy-care native wildflower that performs well in garden beds, meadows, and borders with partial to full sun. Water regularly during the first growing season to establish roots, then reduce frequency as plants become drought-resilient. Deadhead spent blooms to prolong flowering, or leave seed heads standing in fall to feed birds through winter.
Growing conditions
The details behind the basics
- Daily light
- 4 hours
- Watering
- Water deeply to moisten the root zone; allow the top inch of soil to dry between waterings · Every 7-10 days
- Maintenance
- Low
- Soil
- loam
- Soil pH
- 6–7
- Temperature
- -10°F to 85°F
- Cycle
- Perennial
Hardiness
USDA 5a-9b
Form & growth
Mature size and habit
- Mature height
- 18 in – 3 ft
- Spread
- 2 ft
- Spacing
- 18 in apart
- Growth rate
- Fast
- Root depth
- Medium
- Flowers
- Orange
- Foliage
- Green · Coarse
Ecology & origin
Where it belongs and what it brings
- Native to
- Alabama, Arkansas, Austria, Baltic States, Belarus, Belgium, Connecticut, Cuba, Czechoslovakia, Delaware, France, Georgia, Germany, Great Britain, Hungary, Illinois, Indiana, Ireland, Irkutsk, Italy
- Attracts
- Bees, Butterflies, Birds
Sources: trefle, usda
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