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Baptisia leucophaea

cream wild-indigo

Fabaceae central United States

Attracts Pollinators Attracts Butterflies Deer Resistant Drought Tolerant

Native to North America

SunFull Sun

WaterLow · drought-tolerant

HardinessZones 4–8

Overview

Baptisia leucophaea is a low, spreading herbaceous perennial in the pea family (Fabaceae), 12–24 inches (30–60 cm) tall but often wider than tall, with stout stems clothed in soft gray hairs. The blue-green to gray-green leaves are divided into three leaflets, with a pair of large leafy stipules at each node. In spring it produces long flower clusters that lean sideways or trail along the ground rather than standing upright, carrying cream to pale yellow pea-shaped flowers each about 1 inch (2.5 cm) long among large bracts. Inflated, hard-walled seedpods follow and dry to black, holding loose seeds that rattle. It grows on dry prairies, sandy slopes, open woods, and roadsides across the central United States, where its deep taproot lets it survive drought and fire. As a legume it fixes nitrogen through root bacteria. The foliage and seeds contain alkaloids that can poison livestock and people if eaten in quantity. The plant is slow to establish from seed and takes several years to reach flowering size.

Native Range

Baptisia leucophaea is native to the central United States, from the upper Midwest and Great Lakes region south through the Great Plains to Texas and the Gulf states. It grows on dry prairies, savannas, and sandy open ground across this range.

Suggested Uses

Baptisia leucophaea is used in prairie restorations, native and dryland gardens, and sunny borders on well-drained soil. It serves as a larval host for several butterflies and supplies spring pollen for bumblebees. Its black seedpods add texture and rattle in autumn plantings.

How to Identify

Identify Baptisia leucophaea by its low, gray-hairy, wide-spreading habit and three-part blue-green leaves with large leafy stipules. In spring it carries long, sideways- or downward-leaning racemes of cream to pale yellow pea flowers, set among prominent bracts — a low, trailing flower display unlike the upright spikes of most wild indigos such as B. australis. Inflated black pods that rattle confirm the identification later in the season.

Appearance

Size & Dimensions

Height1' - 2'

Width/Spread2' - 3'

Colors

Flower Colors

Foliage Colors

Fall Foliage Colors

Bloom Information

Bloom Period

~3 weeks

Spring

Cream to pale yellow flowers open in spring, from April into May depending on latitude. The trailing racemes bloom over about 3 weeks, earlier than most prairie wildflowers. Bumblebees are the main pollinators, after which the inflated pods form and blacken.

Detailed Descriptions

Flower Description

cream to pale yellow

Foliage Description

gray-green

Growing Conditions

Sun Requirements

SunFull Sun

Requires 6-12 hours of direct sunlight daily

• Full Sun: 6+ hours of direct sunlight

• Partial Shade: 3-6 hours of direct sunlight

• Full Shade: Less than 3 hours of direct sunlight

Soil Requirements

pH Range6.0 - 7.5(Neutral)

357912

Soil Types

sand loam rocky

Drainagewell drained

Water & Climate

Water Needs

Low

Frost Tolerance

hardy

Time to Maturity

3-4 years to flowering

Drought Tolerance

Drought tolerant when established

Care & Maintenance

Care Guide

Baptisia leucophaea grows in full sun on dry, well-drained sandy, loamy, or rocky soils and needs little water once its deep taproot is established. It tolerates heat, drought, and poor ground and fixes its own nitrogen, so it needs no fertilizer. It is slow to establish and may take three to four years to flower from seed, but a mature plant is long-lived and rarely needs division. Because of the taproot, established plants do not transplant well. It declines in wet, heavy, or shaded sites.

Pruning

No routine pruning is needed. The whole plant can be cut back after the foliage yellows in late summer, or left standing for the rattling black pods. It is left in place once established, since the taproot makes moving it difficult.