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PlantSnap
Plant Care
Cutleaf coneflower
(Rudbeckia laciniata)
Also Known As
Cutleaf coneflower, Green-headed coneflower, Kansas daisy
About This Plant
Rudbeckia laciniata is a tall, herbaceous perennial plant that produces yellow, daisy-like flowers with dark centers. The leaves are deeply lobed and can grow up to 12 inches (30 cm) long.
Plant Care Instructions
Outdoor Size Range
Height: 5-9 feet (1.5-2.7 meters), Spread: 2-3 feet (0.6-0.9 meters)
Light Requirements
Full sun to partial shade. At least 6 hours of direct sunlight per day is required for optimal growth.
Humidity Needs
This plant can tolerate average humidity levels.
Fertilizing Schedule
Fertilize once a month during the growing season with a balanced, all-purpose fertilizer.
Pruning Guidelines
Deadhead spent flowers to encourage more blooms. Cut back the stems to the ground in the fall.
Common Pests and Diseases
Rudbeckia laciniata is relatively pest-free, but may be susceptible to aphids, spider mites, and powdery mildew.
Indoor Size Range
Not suitable for indoor growing.
Watering Schedule
Rudbeckia laciniata prefers moist, well-drained soil. Water regularly, especially during hot, dry periods.
Temperature Range
Rudbeckia laciniata can tolerate a wide range of temperatures, from -30°F (-34°C) to 100°F (38°C).
Growing Season
Late summer to fall.
Growing Difficulty Level
Easy to grow.
USDA Hardiness Zones
3-9
Did You Know?
Rudbeckia laciniata is often used in wildflower gardens and naturalized areas. It is also a popular cut flower due to its long vase life.
