Brown-eyed Susan

Rudbeckia triloba

Pollinator Value

🐝 Specialist Bee Host: Andrena rudbeckiae, Pseudopanurgus rudbeckiae, Andrena aliciae, Pseudopanurgus andrenoides, Melissodes agilis, Melissodes druriellus, Melissodes trinodis, Colletes compactus
S17 genus-level Rudbeckia pollen specialists with Eastern NA ranges

Proximity Score: 2
Native Status: ❌ Outaouais ❌ Ottawa ❌ QC ❌ ON
Closest Direction: SE
CEC Eco-Regions: 5 – Northern Forests, 5.3 – Atlantic Highlands, 5.3.1 – Northern Appalachians and Atlantic Maritime Highlands
Rarity Notes: Ranked SNA (Not Applicable) in both Ontario and Quebec as an introduced species. Not listed under SARA. Globally secure at G5. Native to the central and eastern United States from New York to Minnesota south to Texas and Florida.
S22 S26 S1
Rarity Ranks: QC SNA – Not Applicable, ON SNA – Not Applicable
Migration: Stable
Ecological Context: Rudbeckia triloba is a short-lived perennial or biennial of open moist woods, floodplain borders, wet prairies, and disturbed habitats. In its native range from New York to Minnesota southward, it occupies early-successional openings, roadsides, and field margins on mesic to dry soils. Introduced and naturalizing in the Ottawa-Gatineau region, it persists in anthropogenic habitats and woodland edges.
S4 S7 S61

Roles: Fortress/Barrier, Pollinator Attractor
S73/S29/S72 Evidence: Fortress/Barrier: S61 keyword match: spines? (supporting signal only)] | Pollinator Attractor: S73 [MEDIUM]: S68 34 bee associations (threshold=3)]

❌ Not Edible