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Description
Senna Septemtrionalis, also known as Northern Senna or Wild Senna, is a perennial herbaceous plant that belongs to the Fabaceae family. It is native to North America and can be found in various states such as Texas, Oklahoma, Louisiana, and Arkansas. This plant is commonly used for its medicinal properties, particularly as a laxative and for its anti-inflammatory effects.
Taxonomic Information
| Domain | Eukarya |
|---|---|
| Kingdom | Plantae |
| Phylum | Spermatophyta |
| Class | Magnoliopsida |
| Order | Fabales |
| Family | Fabaceae |
| Genus | Senna |
Appearance
Senna Septemtrionalis can grow up to 6 feet in height and has an upright growth habit. Its leaves are pinnately compound, with 7-8 pairs of leaflets that are oblong and oval-shaped. The plant produces bright yellow flowers that bloom in mid-summer and have a typical legume flower structure. The fruit of the plant is a brown and flattened pod that contains several seeds.
Care Guide
Water: Senna Septemtrionalis prefers well-drained soil and requires moderate watering. During hot and dry weather, it is advisable to water the plant deeply once a week.
Fertilization: Fertilize the plant once in early spring with a balanced fertilizer. Avoid over-fertilizing as it can lead to excessive foliage growth and a decrease in flower production.
Soil: The plant prefers well-drained soil that is slightly acidic. It can tolerate a wide range of soil types, but it grows best in loamy soil.
Sunlight: Senna Septemtrionalis prefers full sun but can tolerate partial shade.
Hardiness Zones: The plant can grow in USDA hardiness zones 6-10.
Common Pests & Diseases
Senna Septemtrionalis is relatively resistant to pests and diseases. However, some common pests that may affect the plant include spider mites and aphids. The plant may also be susceptible to fungal diseases such as powdery mildew and root rot.
Habitat
Senna Septemtrionalis is native to North America and can be found in various states such as Texas, Oklahoma, Louisiana, and Arkansas. It grows in a wide range of habitats, including prairies, open woods, and disturbed areas.
Question and Answer
Q: Is Senna Septemtrionalis toxic?
A: The plant contains anthraquinones, which can cause toxicity if consumed in large amounts.
Q: How can I propagate Senna Septemtrionalis?
A: The plant can be propagated by seeds or cuttings.
Q: Can Senna Septemtrionalis be used for medicinal purposes?
A: Yes, the plant is commonly used for its laxative and anti-inflammatory properties.
Q: When is the best time to prune Senna Septemtrionalis?
A: The plant can be pruned in late winter or early spring before new growth appears.
Related Plants
- Senna marilandica
- Senna hebecarpa
- Senna obtusifolia
- Senna bicapsularis
References
- Berger, B. M., & Wentworth, T. R. (1998). Wild Senna. University of Arkansas Division of Agriculture Cooperative Extension Service. Retrieved from https://www.uaex.edu/publications/pdf/FSA-3058.pdf
- USDA Natural Resources Conservation Service. (n.d.). Senna septemtrionalis (L.) Irwin & Barneby. Retrieved from https://plants.usda.gov/core/profile?symbol=SESE2
