Contents
Description
Rudbeckia Amplexicaulis is a flowering plant in the sunflower family, native to North America. It is also known as Clasping Coneflower due to its leaves that clasp the stem. The plant typically grows to a height of 3-4 feet and has a spread of 2-3 feet.
Taxonomic Information
| Domain | Eukaryota |
| Kingdom | Plantae |
| Phylum | Spermatophyta |
| Class | Magnoliopsida |
| Order | Asterales |
| Family | Asteraceae |
| Genus | Rudbeckia |
Appearance
The flowers of Rudbeckia Amplexicaulis are yellow with a brown or black center, and bloom from July to September. The leaves are simple and alternate, with a length of 3-6 inches and width of 1-3 inches. The stem of the plant is hairy, and the roots are fibrous.
Care Guide
Rudbeckia Amplexicaulis grows best in full sun to partial shade, and in well-drained soil. It is a drought-tolerant plant and does not require regular watering. However, it is important to water the plant regularly during the first growing season to establish a strong root system. The plant should be fertilized once a year in the spring with a balanced fertilizer. It is hardy in zones 3-9.
Common Pests & Diseases
Rudbeckia Amplexicaulis is generally pest and disease resistant, but may be affected by powdery mildew or leaf spot. These can be treated with a fungicide if necessary. The plant may also attract aphids or spider mites, which can be controlled with insecticidal soap or neem oil.
Habitat
Rudbeckia Amplexicaulis is native to North America and can be found in prairies, meadows, and along roadsides. It prefers well-drained soil and full sun to partial shade.
Question and Answer
Q: Is Rudbeckia Amplexicaulis a perennial or annual plant?
A: Rudbeckia Amplexicaulis is a perennial plant.
Q: What is the blooming season for Rudbeckia Amplexicaulis?
A: The blooming season for Rudbeckia Amplexicaulis is from July to September.
Q: Can Rudbeckia Amplexicaulis tolerate drought?
A: Yes, Rudbeckia Amplexicaulis is a drought-tolerant plant.
Q: What hardiness zones is Rudbeckia Amplexicaulis suitable for?
A: Rudbeckia Amplexicaulis is hardy in zones 3-9.
Related Plants
- Rudbeckia Fulgida
- Rudbeckia Hirta
- Rudbeckia Laciniata
- Rudbeckia Maxima
References
- Missouri Botanical Garden: Rudbeckia amplexicaulis
- University of Illinois Extension: Black-Eyed Susan (Rudbeckia)
- North Carolina State University Extension: Clasping Coneflower (Rudbeckia amplexicaulis)
