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Description
Senna Roemeriana is a perennial plant that belongs to the Fabaceae or legume family. It is native to Mexico and the southwestern United States, where it grows in dry and rocky areas. The plant can reach a height of up to 3 feet, with a spread of 3-4 feet. Senna Roemeriana produces clusters of bright yellow flowers that bloom from late spring to early summer. The flowers are followed by flat and elongated seed pods that can reach up to 4 inches in length.
Taxonomic Information
| Domain | Eukarya |
|---|---|
| Kingdom | Plantae |
| Phylum | Spermatophyta |
| Class | Magnoliopsida |
| Order | Fabales |
| Family | Fabaceae |
| Genus | Senna |
| Species | Senna Roemeriana |
Appearance
Senna Roemeriana has a shrubby growth habit and can spread up to 4 feet. The plant produces compound leaves that are pinnate, with 6-8 pairs of leaflets. The leaflets are obovate in shape, with a length of 1-2 inches. The plant’s stem and branches are green and somewhat woody. Senna Roemeriana produces clusters of bright yellow flowers that are about 1 inch in diameter. The flowers have five petals and a prominent stamen. The plant’s blooms are followed by elongated seed pods that can reach up to 4 inches in length.
Care Guide
Senna Roemeriana is a low-maintenance plant that requires minimal care. Here are some guidelines to follow:
Water: Water the plant regularly during the growing season, especially during hot and dry weather. Allow the soil to dry out slightly between watering.
Fertilization: Apply a balanced fertilizer in the spring to promote healthy growth and blooming.
Soil: Senna Roemeriana prefers well-draining soil that is slightly acidic to neutral. Amend heavy soil with organic matter to improve drainage.
Sunlight: Plant Senna Roemeriana in full sun to partial shade. The plant will tolerate some shade, but blooming may be reduced.
Hardiness Zones: Senna Roemeriana is hardy in USDA zones 8-11. It may be grown as an annual in cooler regions.
Common Pests & Diseases
Senna Roemeriana is generally free from serious pests and diseases. However, the plant may be susceptible to root rot if the soil is too wet. Aphids and spider mites may occasionally infest the plant, but can be controlled with insecticidal soap or neem oil.
Habitat
Senna Roemeriana is native to the southwestern United States and Mexico. The plant grows in dry and rocky areas, such as hillsides, slopes, and canyons. It is also found in disturbed areas, such as roadsides and pastures.
Question and Answer
Q: Is Senna Roemeriana poisonous?
A: No, Senna Roemeriana is not toxic to humans or animals. However, the plant’s seeds and pods may cause gastrointestinal upset if ingested in large quantities.
Q: Can Senna Roemeriana tolerate drought?
A: Yes, Senna Roemeriana is drought-tolerant once established. However, the plant will perform best with regular watering during the growing season.
Q: Can Senna Roemeriana be grown in containers?
A: Yes, Senna Roemeriana can be grown in containers as long as the pot is large enough to accommodate the plant’s root system. Use a well-draining potting mix and water regularly.
Q: How often should Senna Roemeriana be pruned?
A: Senna Roemeriana can be pruned in early spring to promote bushy growth and remove any dead or damaged branches. The plant can also be pruned after blooming to remove spent flowers and encourage a second flush of blooms.
Related Plants
- Senna Alata
- Senna Auriculata
- Senna Corymbosa
- Senna Mexicana
- Senna Obtusifolia
References
- “Senna Roemeriana.” Lady Bird Johnson Wildflower Center, University of Texas at Austin, www.wildflower.org/plants/result.php?id_plant=sero7.
- “Senna Roemeriana.” Missouri Botanical Garden, www.missouribotanicalgarden.org/PlantFinder/PlantFinderDetails.aspx?kempercode=c740.
- “Senna Roemeriana.” Arizona State University, www.public.asu.edu/~camartin/plants/Plant%20html%20files/sennaroemeriana.html.
