Source: Short Hike
Helianthus divaricatus
Woodland Sunflower
Hélianthe à feuilles étalées
Synonyms
divergent sunflower
hélianthe divariqué
No seeds available for this plant.
We currently accept seeds for this plant
Bloom Colour: Yellow
Bloom Period: Jul - Sep
Max Height: 4.0 feet
Max Width: 3.0 feet (spreads by rhizome)
Light Condition:
Less than 2 or 3 hours of direct sun a day
Soil conditions:
Tolerates dry soil condition
Tolerates medium soil condition
Less than 2 or 3 hours of direct sun a day
Tolerates dry soil condition
Tolerates medium soil condition
Lifespan:
Perennial
plants that will that come back year after year
Gardener Experience:
Does not spread uncontrollably
Easy to germinate
Self-seeding
Does not spread uncontrollably
Easy to germinate
Self-seeding
Landscape Uses:
Suitable for rock gardens
Suitable for container garden
Suitable for woodland gardens
Suitable for rock gardens
Suitable for container garden
Suitable for woodland gardens
Ecological Benefits:
Supports pollinators
Bee host
Keystone species
Supports pollinators
Bee host
Keystone species
Tolerates:
Deer resistant
Rabbit resistant
Tolerates foot traffic around the plant
Tolerates limestone conditions
Tolerates juglone conditions
Deer resistant
Rabbit resistant
Tolerates foot traffic around the plant
Tolerates limestone conditions
Tolerates juglone conditions
Special Features and Considerations:
Plant Location
Native to Ottawa region: Yes
Distribution according to VASCAN
Ephemeral
Native
Introduced
Excluded
Extirpated
Doubtful
Absent
Canadensis
Thrives in Ecozones
- Mixed Wood Plains
Ecological Benefits
Butterflies Supported by Helianthus divaricatus
- Euplexia benesimilis (American Angle Shades)
- Phragmatobia fuliginosa (Ruby Tiger)
Specialized Bees Supported by Helianthus divaricatus
- Andrena aliciae
- Andrena chromotricha
- Andrena helianthi
- Complexe Colletes americanus
- Dianthidium simile
- Megachile inimica
- Megachile pugnata
- Melissodes agilis
- Melissodes denticulatus
- Melissodes illatus
- Melissodes trinodis
- Perdita pallidipennis
Plants that grow in similar conditions, that bloom at the same time.
Complementary Plants
- No complementary plants found.
Substitute For Non-Native Plants
- Leucanthemum (Shasta Daisy)
- Gerbera (Gerbera Daisy)
- Helianthus).1 (Non-Native Sunflower)
- NA (Non-Native False Sunflower)
Sowing Information
Download Seed Envelope Labels (PDF)
- Sowing depth: Sow just below surface
- Sow by March
- Stratification duration: 30 days
- Self-seeding
Harvesting and Seed Sharing
- Harvest start month: September
- Harvesting indicator:
- Seeds easily fall off when you gently pull them off
- Harvesting:
- Shake seed head in paper bag
- Seed viability test:
- No test needed before donating
- Packaging measure: 1 rounded 1/4 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
- Cultivar: No, you can donate without knowing the source as there are only straight species
- Remove non-seed material
- No harvesting video available at this time.
Toxicity Notes
Inadequate information on toxicity found.