Lady Bird Johnson Wildflower Center - The University of Texas at Austin information

 Native Plant Database

Baptisia alba (White wild indigo)
Bransford, W.D. and Dolphia

Baptisia alba (L.) Vent.


White wild indigo

Fabaceae (Pea Family)



This 2-4 ft., mound-shaped perennial holds its white, pea-like flowers in erect clusters. Velvety, trifoliate leaves turn from bluish-gray to black in the fall. A bushy perennial with smooth leaves and white or cream-colored pea flowers in stiffly erect clusters; stem covered with whitish bloom. Clusters of large, black seedpods often remain attached to the naked winter stems.

This showy legume, long known as B. leucantha but now as B. alba, often stands out above surrounding prairie grasses. Many species of this genus contain a blue dye that resembles indigo and becomes noticeable in autumn as the plants dry out and blacken. Large-bracted Wild Indigo (B. bracteata var. leucophaea) has two large stipules at the base of 3-parted leaves, giving the effect of five leaflets rather than three.

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Plant Characteristics

Duration: Perennial
Habit: Herb
Leaf Arrangement: Alternate
Leaf Complexity: Trifoliate
Size Notes: Normally 2 to 3 feet tall, but can reach 6 feet
Leaf: bright green to pale blue, black in fall
Flower: Flowers 1 inch in 6 to 9 inch spikes
Fruit: Green or black up to 1 inch
Size Class: 1-3 ft. , 3-6 ft.

Bloom Information

Bloom Color: White
Bloom Time: Apr , May , Jun , Jul
Bloom Notes: Blooms earlier in southern parts of its range, later the farther north you go.

Distribution

USA: AL , AR , FL , GA , IL , IN , IA , KS , KY , LA , MD , MI , MN , MS , MO , NE , NY , NC , OH , OK , SC , TN , TX , VA , WI
Native Distribution: VA, OH, MI, MN & s.e. NE, s. to w. FL & e.TX
Native Habitat: Prairies; open woods; ravines
USDA Native Status: L48(N)

Growing Conditions

Water Use: Medium
Light Requirement: Sun
Soil Moisture: Moist , Dry
Soil pH: Acidic (pH<6.8)
Heat Tolerant: yes
Soil Description: Rocky or sandy, acid soils. Tolerates clay.
Conditions Comments: Tolerates seasonal flooding

Benefit

Use Ornamental: Used in gardens and grasslands.
Warning: This plant has been fatal to cows and can be irritating to humans if ingested. Sensitivity to a toxin varies with a person’s age, weight, physical condition, and individual susceptibility. Children are most vulnerable because of their curiosity and small size. Toxicity can vary in a plant according to season, the plant’s different parts, and its stage of growth; and plants can absorb toxic substances, such as herbicides, pesticides, and pollutants from the water, air, and soil.
Conspicuous Flowers: yes
Interesting Foliage: yes

Last Update: 2012-12-07