Also known as Black-Eyed Susan · Brown-Eyed Coneflower · Brown-Eyed Susan
Brown-eyed Susan (Rudbeckia triloba) is a vigorous, multi-branched perennial or biennial producing abundant golden-yellow flowers with dark brown centers.
At-a-glance light, water, soil, and growing conditions from plant data
Full Sun to Partial Shade
75% intensity
Prefers full sun for best flowering, but will tolerate partial shade. At least 6 hours of direct sunlight daily is ideal.
Moderate
50% intensity
Keep soil consistently moist but well-drained. Water more frequently during dry spells and established plants can tolerate some drought.
Well-drained
50% intensity
Moderate
50% intensity
Prefers average room temperatures. Hardy in USDA zones 4-9. Protect from extreme heat and frost.
Low
25% intensity
Benefits from light feeding in spring with a balanced fertilizer. Over-fertilizing can reduce flowering.
Safety information from plant toxicity data
| Attribute | Value |
|---|---|
| Toxic for humans | No 0/5 intensity |
| Toxic for pets | No 0/5 intensity |
| Edible | No |
None
Key traits and growing stats from plant data
Watering, pruning, propagation, and repotting details from plant data
Water consistently, especially during the first year and dry periods. Aim for moist, but not waterlogged, soil. Reduce watering in winter when the plant is dormant, allowing the soil to dry slightly between waterings.
Proper drainage is crucial to prevent root rot.
Deadhead spent flowers regularly to encourage more blooms and maintain a tidy appearance. Cut back plants in late fall or early spring to remove dead or damaged stems and to shape the plant.
This also promotes vigorous new growth. Light pinching in early summer can promote bushiness.
Easily propagated from seed sown in early spring indoors or directly outdoors after the last frost. Division of established clumps in early spring or fall is also an effective method.
Ensure new divisions have sufficient moisture and are protected from extreme temperatures.
Established plants generally do not require frequent repotting. If grown in containers, repot every 2-3 years in early spring into a slightly larger pot with fresh potting mix.
Ensure the new pot has adequate drainage holes to prevent water accumulation.
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Monthly activity intensity for bloom and fruit across both hemispheres.
Flowering & fruiting calendar
Flowering & fruiting calendar
Photos of Browneyed Susan (Rudbeckia triloba)
Where Browneyed Susan (Rudbeckia triloba) is found
Density
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Common names and botanical synonyms
Botanical classification
| Rank | Name |
|---|---|
| Kingdom | Plantae |
| Division | Tracheophyta |
| Class | Magnoliopsida |
| Order | Asterales |
| Family | Asteraceae |
| Genus | Rudbeckia |
| Species | Rudbeckia triloba |
Similar in genus Rudbeckia
Answers based on plant encyclopedia data
