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
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
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.
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 least in the U.S., as it is native in every state in the lower 48 from Colorado, Montana, Wyoming, and New Mexico east. It is also listed as endangered in Maine. According to the USDA plant database, it is not on any state's noxious weed list.
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.