Plant types and subtypes: Perennials
Light Requirements: sun, part-sun
Water Use: medium
Soil Moisture: moist
Soil Description: neutral, rich, average, loam, sand
Bloom Time: July, August
Bloom Color: yellow
Leaf Color: green
Hardiness Zone: 5, 6, 7
Additional Tags: attracts butterflies, cottage garden plant, naturalizing, ornamental foliage, poisonous
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Senna hebecarpaAlso known as:
Senna hebecarpa is an eye catching species for the garden. This large plant produces clusters of golden, yellow flowers composed of 5 petals with contrasting and conspicuous brown anthers. The leaves are typical of most other members of the Pea family.
Enjoying full sun to light shade, American senna readily colonizes in average soil. It may be pruned after flowering to maintain dense foliage. Blooms in July and August. Zones 4-8
Easy to propagate from seeds. These will benefit from an overnight soak before sowing. It can also be propagated from cuttings.
Most species of Senna where previously placed in the Cassia genus. The plant is poisonous and potentially dangerous. Sensitivity will vary, depending on a person's age and susceptibility. It attracts butterflies and is a larval host for the 'cloudless sulphur'.
Native Range & Classification
Recorded County Distribution: USDA data
CT, DC, DE, GA, IL, IN, KY, MA, MD, ME, MI, NC, NH, NJ, NY, OH, PA, RI, SC, TN, VA, VT, WI, WV
USDA Endangered Status:
- Endangered: MA, NH
- Historical: RI
- Special Concern: CT
- Threatened: VT
|Species||Senna hebecarpa||American senna|