Image of Rudbeckia hirta
image of Flowering plant
Rudbeckia hirta
Black-eyed Susan
Rudbeckie hérissée

Obsolete Names

  • hairy coneflower
  • marguerite jaune
  • rudbeckia hérissé
  • rudbeckie hirsute
No seeds available for this plant.

We are not accepting seeds for this plant at the moment.

Bloom colour: Yellow Bloom period: June - September
Max Height: 2.0 feet
Max Width: 1.0 feet
Light condition:
Full sun More than 6 hours of direct sun a day
Part shade More than 2 or 3 hours but less than 6 hours of direct sun a day
Soil conditions:
Moisture dry Tolerates dry soil condition
Moisture medium Tolerates medium soil condition
Lifespan : Biennial
Gardener Experience:
beginner friendly Suitable for beginner gardeners
does not spread Does not spread uncontrollably
plant germinate easy Easy to germinate
Landscape uses:
rock garden Suitable for rock gardens
rain garden Suitable for rain gardens
shoreline_rehab Suitable for shoreline rehabilitation
container suitable Suitable for container garden
school garden Suitable for school gardens
foot traffic tolerance light Tolerates light foot traffic
Ecological Benefits:
Bird friendly Supports birds
Pollinator garden Supports pollinators
butterfly host Butterfly host
bee host Bee host
keystones species Keystone species
Tolerates:
drought Tolerant Tolerates drought conditions
Salt Tolerant Tolerates salt conditions
Deer Resistant Deer resistant
rabbit resistant Rabbit resistant
limestone Tolerant Tolerates limestone conditions
sand Tolerant Tolerates sandy conditions
boulevard garden tolerant Tolerates boulevard garden conditions
juglone Tolerant Tolerates juglone conditions
transplantation Tolerant Tolerates transplantation

Plant Distribution

Native to Ottawa region: Yes

Distribution according to VASCAN

Distribution: Rudbeckia hirta
Ephemeral Native Introduced Excluded Extirpated Doubtful Absent
View taxonomy on Canadensys

View on iNaturalist

Thrives in Ecozones

  • Taiga Shield
  • ecozone-Pacific Maritime
  • Ecozone-Mixed Wood Plain
  • Ecozone-prairies
  • Ecozone-Montane Cordillera
  • Ecozone-Boreal Shield
  • Taiga Plains
  • Ecozone-Taiga_Shield
  • Atlantic_Maritime
  • Ecozone-Pacific_Maritime
  • Ecozone-Prairies
  • Ecozone-Taiga_Plains

Butterflies Supported by Rudbeckia hirta

No butterfly data available for this plant.

Bees Supported by Rudbeckia hirta

  • Andrena aliciae
  • Andrena rudbeckiae
  • Complexe Colletes americanus
  • Complexe Colletes compactus
  • Megachile inimica
  • Megachile pugnata
  • Melissodes agilis
  • Melissodes illatus
  • Melissodes subillatus
  • Melissodes trinodis
  • Protandrena andrenoides

Complementary Plants Plants that grow in similar conditions, that bloom at the same time.

  • No complementary plants found.

Sowing Information

  • Sowing depth: Sow just below surface
  • Sow before March
  • Stratification duration: 30 days
  • Self-seeding

Harvesting Information

  • Harvesting indicator: Seeds easily fall off when you gently pull them off
  • Harvesting mean: Cut top edge then shake seeds off in bag or container with rock or equivalent
  • Seed Viability Test: No test needed before donating
  • Packaging Measure: 1 rounded 1/32 teaspoon
  • Seed Storage: Air Dry in paper bag or open container, for a few days until crisp, shaking seeds to move them once in a while to prevent molding
  • On Cultivar: Yes, do not donate unless you know source, and there are no known cultivars in your garden or at proximity