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perennial

Blue Wild Indigo

Baptisia australis

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Blue Wild Indigo (Baptisia australis) at Ashcombe Farm & Greenhouses

Baptisia australis flowers

Baptisia australis 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:  2a

Other Names:  False Indigo

Ornamental Features

Blue Wild Indigo has masses of beautiful spikes of indigo pea-like flowers rising above the foliage from mid spring to early summer, which are most effective when planted in groupings. The flowers are excellent for cutting. Its round compound leaves emerge lime green in spring, turning olive green in color throughout the season. The fruit is not ornamentally significant.

Landscape Attributes

Blue Wild Indigo is an herbaceous perennial with an upright spreading habit of growth. Its medium texture blends into the garden, but can always be balanced by a couple of finer or coarser plants for an effective composition.

This is a relatively low maintenance plant, and is best cleaned up in early spring before it resumes active growth for the season. It is a good choice for attracting bees and butterflies to your yard. It has no significant negative characteristics.

Blue Wild Indigo is recommended for the following landscape applications;

  • Mass Planting
  • General Garden Use

Planting & Growing

Blue Wild Indigo will grow to be about 3 feet tall at maturity extending to 4 feet tall with the flowers, with a spread of 3 feet. It grows at a slow rate, and under ideal conditions can be expected to live for approximately 25 years.

This plant does best in full sun to partial shade. It is very adaptable to both dry and moist growing conditions, but will not tolerate any standing water. It is considered to be drought-tolerant, and thus makes an ideal choice for a low-water garden or xeriscape application. It is not particular as to soil type, but has a definite preference for alkaline soils, and is able to handle environmental salt. It is somewhat tolerant of urban pollution. This species is native to parts of North America.

 
 
Hardiness Zone Plant Height Minimum Sunlight Soil pH Preference
Characteristics
Massing  Garden 
Applications
Flowers  Attracts Wildlife 
Ornamental Features