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Indian Grass
Sorghastrum nutans

Family: Poaceae (poh-AY-see-ee) (Info)
Genus: Sorghastrum (sor-GAS-trum) (Info)
Species: nutans (NUT-ans) (Info)

Category:

Ornamental Grasses and Bamboo

Height:

4-6 ft. (1.2-1.8 m)

Spacing:

18-24 in. (45-60 cm)

Hardiness:

USDA Zone 4a: to -34.4 C (-30 F)

USDA Zone 4b: to -31.6 C (-25 F)

USDA Zone 5a: to -28.8 C (-20 F)

USDA Zone 5b: to -26.1 C (-15 F)

USDA Zone 6a: to -23.3 C (-10 F)

USDA Zone 6b: to -20.5 C (-5 F)

USDA Zone 7a: to -17.7 C (0 F)

USDA Zone 7b: to -14.9 C (5 F)

USDA Zone 8a: to -12.2 C (10 F)

USDA Zone 8b: to -9.4 C (15 F)

USDA Zone 9a: to -6.6 C (20 F)

USDA Zone 9b: to -3.8 C (25 F)

Sun Exposure:

Full Sun

Danger:

N/A

Bloom Color:

Cream/Tan

Bloom Time:

Late Summer/Early Fall

Foliage:

Grown for foliage

Herbaceous

Blue-Green

Other details:

May be a noxious weed or invasive

Drought-tolerant; suitable for xeriscaping

Average Water Needs; Water regularly; do not overwater

Self-sows freely; deadhead if you do not want volunteer seedlings next season

This plant may be considered a protected species; check before digging or gathering seeds

Flowers are good for drying and preserving

Provides winter interest

Soil pH requirements:

6.1 to 6.5 (mildly acidic)

6.6 to 7.5 (neutral)

7.6 to 7.8 (mildly alkaline)

Patent Information:

Non-patented

Propagation Methods:

By dividing the rootball

From seed; direct sow outdoors in fall

From seed; direct sow after last frost

Seed Collecting:

Bag seedheads to capture ripening seed

Allow seedheads to dry on plants; remove and collect seeds

Regional

This plant has been said to grow in the following regions:

Denver, Colorado

Grand Junction, Colorado

Cedar Falls, Iowa

Bardstown, Kentucky

Horton, Michigan

Minneapolis, Minnesota

O Fallon, Missouri

Frenchtown, New Jersey

Edmond, Oklahoma

Arlington, Texas

San Antonio, Texas (2 reports)

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Gardeners' Notes:

2
positives
1
neutral
0
negatives
RatingContent
Positive

On Jul 15, 2010, learningplanter from Milan, MI wrote:

Jackson, Michigan. Zone 5. I started Indian Grass indoors from seed. It survived the Michigan winter in my garden. My soil is very sandy. The plant is very slow to sprout in the spring. Growth does not speed up until summer. Informal and naturalized appearance. Not much of a vertical grass.

Positive

On Jul 4, 2007, dkm65 from Cedar Falls, IA (Zone 4b) wrote:

Native to the tallgrass prairie region of the U.S., this is probably my favorite tall prairie grass for looks. It is especially nice in the fall and winter because of the attractive seed heads, and I highly recommend you don't cut it back before spring because of its winter interest. I don't think you need pay for a named cultivar as the species is impressive IMO.

It likes full sun, and will tolerate all but the wettest conditions (does best on well-drained mesic to dry soil though). It grows easily from seed, with no pre-treatment necessary. It ranges from about 4' - 6' tall (although I've seen it about 7' in a prairie remnant), so it may look a bit odd in a really small space. Very drought tolerant.

I doubt this could be a noxious or invasive weed, at l... read more


Editor's Note The USDA's PLANTS Database and Southern Weed Science Society list this plant as "weedy or invasive." It is also noted as endangered in other areas.

Neutral

On Nov 27, 2006, frostweed from Josephine, Arlington, TX (Zone 8a) wrote:

Indian Grass Sorghastrum nutans is native to Texas and other States.