Contents
Description
Rudbeckia Laciniata, commonly known as Cutleaf Coneflower or Green-Headed Coneflower, is a herbaceous perennial plant in the Asteraceae family. It is native to the eastern United States and can grow up to 9 feet tall. Its leaves are alternate, deeply lobed, and toothed, giving it a delicate and lacy appearance. The plant produces bright yellow, daisy-like flowers that bloom from mid-summer to early fall.
Taxonomic Information
| Domain | Eukarya |
|---|---|
| Kingdom | Plantae |
| Phylum | Spermatophyta |
| Class | Magnoliopsida |
| Order | Asterales |
| Family | Asteraceae |
| Genus | Rudbeckia |
Appearance
Rudbeckia Laciniata has a tall and slender stem, which can grow up to 9 feet tall. The plant’s leaves are alternate, deeply lobed, and toothed, reaching up to 12 inches in length. The leaves give the plant a delicate and lacy appearance, contrasting with the bright yellow, daisy-like flowers that bloom from mid-summer to early fall. The flowers can grow up to 4 inches in diameter and have a brownish-purple center disk. They also have long, green, cylindrical bracts that encircle the base of the flower head.
Care Guide
Water
Rudbeckia Laciniata requires regular watering, especially during hot and dry weather. However, it is important not to overwater the plant, as it can lead to root rot. A good rule of thumb is to water the plant deeply once a week, ensuring the soil is moist but not waterlogged.
Fertilization
The plant benefits from fertilization during the growing season. Apply a balanced fertilizer once a month, following the manufacturer’s instructions.
Soil
Rudbeckia Laciniata prefers well-draining soil with a pH between 5.5 and 7.5. It can tolerate a variety of soil types, including sandy, loamy, and clay soils. Adding organic matter, such as compost or aged manure, can improve soil fertility and drainage.
Sunlight
The plant requires full sun to partial shade, with at least six hours of direct sunlight a day. It can tolerate some shade but may produce fewer flowers.
Hardiness Zones
Rudbeckia Laciniata is hardy in USDA zones 3 to 9, meaning it can withstand temperatures as low as -40°F (-40°C) in winter.
Common Pests & Diseases
Rudbeckia Laciniata is generally pest and disease-resistant. However, it can be susceptible to aphids, spider mites, and leafhoppers. These pests can be controlled with insecticidal soap or neem oil. The plant can also develop rust, leaf spot, and powdery mildew. Ensure good air circulation around the plant and avoid overhead watering to prevent these fungal diseases.
Habitat
Rudbeckia Laciniata is native to the eastern United States, from Maine to Georgia and west to Missouri and Arkansas. It can be found in wet meadows, marshes, and along stream banks.
Questions and Answers
Q: Can Rudbeckia Laciniata tolerate drought?
A: While Rudbeckia Laciniata prefers regular watering, it can tolerate drought once established.
Q: How often should I fertilize Rudbeckia Laciniata?
A: Apply a balanced fertilizer once a month during the growing season, following the manufacturer’s instructions.
Q: Does Rudbeckia Laciniata attract pollinators?
A: Yes, the plant’s bright yellow flowers attract bees, butterflies, and other pollinators.
Q: Can Rudbeckia Laciniata be grown in containers?
A: While Rudbeckia Laciniata can be grown in containers, it may require staking due to its tall and slender stem.
Related Plants
- Rudbeckia Fulgida
- Rudbeckia Hirta
- Rudbeckia Maxima
- Rudbeckia Triloba
References
- Missouri Botanical Garden. (n.d.). Rudbeckia Laciniata. Retrieved from https://www.missouribotanicalgarden.org/PlantFinder/PlantFinderDetails.aspx?kempercode=d864
- North Carolina State University. (n.d.). Rudbeckia Laciniata. Retrieved from https://plants.ces.ncsu.edu/plants/rudbeckia-laciniata/
- USDA NRCS. (n.d.). PLANTS Profile for Rudbeckia Laciniata. Retrieved from https://plants.usda.gov/core/profile?symbol=RULA
