Is False Indigo good for the Colorado Front Range?

Yes, False Indigo is a well-suited perennial for Colorado's Front Range.

How far apart do I plant False Indigo?

Space False Indigo about 25 in apart for a faster, fuller bed, or up to 36 in apart for a looser planting.

Is False Indigo hardy on the Front Range?

False Indigo is hardy in USDA 3 to 9. The Colorado Front Range spans roughly USDA 4b to 6a, so it is well within range.

How much water does False Indigo need?

It needs low to medium water once established.

Is False Indigo native to Colorado?

No. It is not a Colorado native, but it grows well on the Front Range.

How long does False Indigo bloom?

False Indigo blooms for several weeks, a long-season performer on the Front Range. Bloom timing shifts a week or two with elevation and spring weather.

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False Indigo

Baptisia australis

Compiled by Nicholas Julia · Reviewed against CSU Extension & Plant Select® · Updated 2026-10-30

False Indigo (Baptisia australis) is a perennial suited to the Colorado Front Range. It matures to about 36 to 48 in tall and 24 to 36 in wide, needs low to medium water, and prefers full sun to partial shade. Shrub-sized perennial; lupine-like spikes; deep taproot makes it very drought tolerant once established.

On the CSU listlow to medium water36 to 48 in tall and 24 to 36 in wideXeric / water-wise

Photos

Photo 1: (c) Alaina Krakowiak, some rights reserved (CC BY)
Photo 2: (c) aarongunnar, some rights reserved (CC BY)
Photo 3: Jean-Pol GRANDMONT, Wikimedia Commons (CC-BY-SA)
Photo 4: no rights reserved
Photo 5: Agnieszka Kwiecień, Nova, Wikimedia Commons (CC-BY-SA)
Photo 6: Agnieszka Kwiecień, Nova, Wikimedia Commons (CC-BY-SA)

At a glance

Will it survive here?

Hardiness zones: USDA 3 to 9
Water needs: low to medium water
Sun: Best in full sun; tolerates partial shade.
Soil: clay, loam, sandy
Soil pH: 6.5 to 8.0
Hail tolerance: high
Wind tolerance: high
Salt tolerance: moderate
Site uses: Slopes & erosion control

How big, what shape?

Mature size: 36 to 48 in tall and 24 to 36 in wide
Planting spacing: ~25 to 36 in apart

What it looks like, and when

Bloom time: late spring, early summer
Bloom color: blue, purple
Bloom length: Long (several weeks)
Foliage: Deciduous

Who else benefits

Pollinator value: high
Deer: Not rated
Colorado native: No

Also worth knowing

Fire rating: Not rated

Planting & establishment

Deep-water first season to establish, then minimal water needed.

Frequently asked questions

Is False Indigo good for the Colorado Front Range?: Yes, False Indigo is a well-suited perennial for Colorado's Front Range.
How big does False Indigo get?: It matures to about 36 to 48 in tall and 24 to 36 in wide.
How far apart do I plant False Indigo?: Space False Indigo about 25 in apart for a faster, fuller bed, or up to 36 in apart for a looser planting.
Is False Indigo hardy on the Front Range?: False Indigo is hardy in USDA 3 to 9. The Colorado Front Range spans roughly USDA 4b to 6a, so it is well within range.
How much water does False Indigo need?: It needs low to medium water once established.
Is False Indigo native to Colorado?: No. It is not a Colorado native, but it grows well on the Front Range.
How long does False Indigo bloom?: False Indigo blooms for several weeks, a long-season performer on the Front Range. Bloom timing shifts a week or two with elevation and spring weather.