Contents
Description
Rudbeckia Subtomentosa, also known as sweet coneflower, is a perennial herbaceous plant that belongs to the Asteraceae family. It is native to the eastern United States, from Texas to Florida and north to Illinois and New York. The plant usually grows up to 4-6 feet tall and 2-4 feet wide. It has a bushy growth habit with multiple stems and leaves that are quite large, measuring up to 12 inches long and 6 inches wide.
Taxonomic Information
| Domain | Eukarya |
| Kingdom | Plantae |
| Phylum | Spermatophyta |
| Class | Angiospermae |
| Order | Asterales |
| Family | Asteraceae |
| Genus | Rudbeckia |
Appearance
The leaves of Rudbeckia Subtomentosa are dark green, hairy, and arranged alternately along the stem. The flowers are similar to those of other members of the Asteraceae family, consisting of yellow petals surrounding a central cone-shaped disk. They bloom from mid-summer to early fall, attracting a wide range of pollinators such as bees and butterflies. The plant prefers moist soil and can tolerate partial shade, but it blooms best in full sun.
Care Guide
Rudbeckia Subtomentosa is a low-maintenance plant that is easy to grow. Here are some tips on how to care for it:
- Water: The plant prefers moist soil, so water it regularly, especially during hot and dry weather.
- Fertilization: Apply a balanced fertilizer in spring and summer to encourage growth and blooming.
- Soil: The plant prefers well-drained soil that is rich in organic matter. It can tolerate a range of soil types, from sandy to clayey.
- Sunlight: The plant blooms best in full sun, but it can tolerate partial shade.
- Hardiness Zones: Rudbeckia Subtomentosa is hardy in USDA zones 5-9.
Common Pests & Diseases
Rudbeckia Subtomentosa is generally resistant to pests and diseases. However, it can be susceptible to fungal diseases such as powdery mildew and rust if the soil is too moist or the air is too humid. To prevent these diseases, avoid overhead watering and provide good air circulation around the plant. In terms of pests, aphids and spider mites can occasionally infest the plant, but they can be easily controlled with insecticidal soap or neem oil.
Habitat
Rudbeckia Subtomentosa is most commonly found in wet meadows, prairies, and along stream banks. It can also grow in disturbed areas such as roadsides and ditches. The plant is often used in landscaping for its showy flowers and tolerance to wet soil conditions.
Question and Answer
Q: Is Rudbeckia Subtomentosa deer-resistant?
A: Yes, the plant is generally deer-resistant due to its tough leaves and bitter taste.
Q: Can I divide Rudbeckia Subtomentosa?
A: Yes, you can divide the plant every 3-4 years in spring or fall. Dig up the clump and separate the roots into smaller sections, then replant them in well-drained soil.
Q: How tall does Rudbeckia Subtomentosa grow?
A: The plant can grow up to 4-6 feet tall and 2-4 feet wide.
Q: How long does Rudbeckia Subtomentosa bloom?
A: The plant blooms from mid-summer to early fall.
Related Plants
- Rudbeckia fulgida (Orange Coneflower)
- Rudbeckia hirta (Black-eyed Susan)
- Rudbeckia laciniata (Cutleaf Coneflower)
- Rudbeckia triloba (Brown-eyed Susan)
References
- Missouri Botanical Garden: Rudbeckia Subtomentosa
- North Carolina State University: Rudbeckia Subtomentosa
- University of Wisconsin-Madison: Sweet Coneflower (Rudbeckia subtomentosa)
