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Wild Senna

Senna hebecarpa

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Wild Senna (Senna hebecarpa) at Jolly Lane Greenhouse

Wild Senna flowers

Wild Senna flowers

(Photo courtesy of NetPS Plant Finder)

Plant Height:  3 feet

Flower Height:  4 feet

Spread:  3 feet

Sunlight:  full sun  partial shade 

Hardiness Zone:  4

Other Names:  syn. Cassia hebecarpa, Wild Cassia

Description:

This native perennial produces dense clusters of golden yellow flowers over a mound of airy green foliage; non-aggressive and non-invasive, a great choice for the garden or border; remove faded flower heads to maintain appearance

Ornamental Features

Wild Senna features showy racemes of gold cup-shaped flowers rising above the foliage from late summer to early fall. Its oval pinnately compound leaves are dark green in color. The foliage often turns yellow in fall. The fruit is not ornamentally significant.

Landscape Attributes

Wild Senna is an herbaceous perennial with an upright spreading habit of growth. Its relatively fine texture sets it apart from other garden plants with less refined foliage.

This plant will require occasional maintenance and upkeep, and is best cleaned up in early spring before it resumes active growth for the season. It is a good choice for attracting bees, butterflies and hummingbirds to your yard. Gardeners should be aware of the following characteristic(s) that may warrant special consideration;

  • Disease

Wild Senna is recommended for the following landscape applications;

  • Accent
  • Mass Planting
  • General Garden Use
  • Naturalizing And Woodland Gardens
  • Container Planting

Planting & Growing

Wild Senna will grow to be about 3 feet tall at maturity extending to 4 feet tall with the flowers, with a spread of 3 feet. Its foliage tends to remain dense right to the ground, not requiring facer plants in front. It grows at a fast rate, and under ideal conditions can be expected to live for approximately 10 years.

This plant does best in full sun to partial shade. It is very adaptable to both dry and moist locations, and should do just fine under typical garden conditions. It is not particular as to soil type or pH. It is highly tolerant of urban pollution and will even thrive in inner city environments. This species is native to parts of North America. It can be propagated by division.

Wild Senna is a fine choice for the garden, but it is also a good selection for planting in outdoor pots and containers. With its upright habit of growth, it is best suited for use as a 'thriller' in the 'spiller-thriller-filler' container combination; plant it near the center of the pot, surrounded by smaller plants and those that spill over the edges. Note that when growing plants in outdoor containers and baskets, they may require more frequent waterings than they would in the yard or garden. Be aware that in our climate, most plants cannot be expected to survive the winter if left in containers outdoors, and this plant is no exception. Contact our store for more information on how to protect it over the winter months.

 
 
Hardiness Zone Plant Height Minimum Sunlight
Characteristics
Accent  Massing  Garden  Naturalizing  Container 
Applications
Flowers  Attracts Wildlife 
Ornamental Features