Black-Eyed Susan

How to care for black-eyed susan

• Light: Requires full sun, at least 6 hours of direct sunlight daily, for abundant flowering and healthy growth. Can tolerate light afternoon shade in hot climates.
• Water: Tolerant of some drought once established, but perform best with regular watering, especially during dry spells. Allow soil to dry slightly between waterings.
• Soil: Prefers well-draining, average to rich soil. Adapts to a variety of soil types, but heavy clay should be amended for better drainage.
• Temperature: Hardy in USDA Zones 3-9, thriving in a wide range of temperatures. Tolerant of both heat and cold once established.
• Humidity: Tolerates average humidity. Good air circulation is beneficial.
• Fertilizer: Generally not heavy feeders; an annual application of compost in spring is usually sufficient. Avoid excessive nitrogen, which can lead to leggy growth.
• Propagation: Easily propagated from seeds, which can be sown directly outdoors in spring or fall. Can also be divided in spring every few years.

Is black-eyed susan toxic to pets?

Not pet-safe. Black-Eyed Susans are mildly toxic to pets (cats, dogs, horses), potentially causing mild gastrointestinal upset or dermatitis if ingested. See our guide to toxic plants for cats and dogs.

Common problems

• Powdery mildew/leaf spots: Ensure good air circulation, avoid overhead watering, and remove affected leaves; consider resistant varieties.
• Aphids/spider mites: Spray with a strong stream of water to dislodge pests or use insecticidal soap; encourage beneficial insects.

Did you know?

Black-Eyed Susans are members of the sunflower family and are the state flower of Maryland, symbolizing justice and courage.

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