Side-oats Grama

Thrives in USDA Zones 3 - 9

• Transplant

  Plant in spring after last frost. Space 12-18 inches for groundcover-like coverage, or 18-24 inches for individual clump effect. Establishes more quickly than most native grasses.

• Harvest

  Leave standing through winter; the pendulous seed spikelets remain ornamental well into winter. Cut back to 3-4 inches in late winter.

• Side-oats Grama is one of the most xeric native plants available; do not irrigate established plants except during extreme drought.

• Tolerates alkaline soils better than most native grasses, making it valuable in limestone-based gardens of the Midwest and Texas Hill Country.

• Use as a groundcover or living mulch on hot, dry slopes; its spreading habit and drought tolerance fill difficult areas where other plants fail.

• Watering

  Extra watering is often only useful during extended dry periods. If the top 2 to 3 inches are still holding moisture, additional water may not help.

• Feeding

  Extra feeding is rarely required if soil is healthy. If growth looks pale or slow, a light compost top-dressing is often enough before adding anything stronger.

• Seasonal care

  In late fall, a light cleanup and fresh mulch can help if winter protection is useful in your climate. Leaving a little space around crowns and trunks often helps air move and keeps excess moisture from sitting there.

• Trailway

  Nebraska-developed cultivar with improved seed germination and establishment; slightly more vigorous than straight species from random sources.

  Best for

  Revegetation; range restoration; reliable establishment

• Vaughn

  New Mexico-developed cultivar with good performance in the southern Great Plains and Southwest; heat and drought tolerance above average.

  Best for

  Zones 7-9; southwestern gardens; xeric conditions

• Straight species (local provenance)

  Seed from local or regional sources is preferred for ecological plantings; geographic provenance matters for drought adaptation and wildlife relationships.

  Best for

  Prairie restoration; wildlife gardens; ecological authenticity

• Rust (minor)

Origin

Native to the central and eastern regions of North America, from southern Canada through the Great Plains to Mexico and Central America, with extensions east to the Atlantic states.

Native Habitat

Mixed-grass and shortgrass prairies, open rocky glades, dry hillsides, and calcareous soils; among the most drought-tolerant native grasses.

Current Distribution

State grass of Texas; common throughout the Great Plains; widely used in range restoration and native plant landscaping.

Kingdom

Plantae

Family

Grass family (Poaceae)

Genus

Bouteloua

Species

Bouteloua curtipendula

• Root System

  Fibrous, branching root system 3-6 feet deep; spreads by short rhizomes forming dense sod in time; excellent soil stabiliser.

• Stem

  Slender culms 18-30 inches tall; upright to slightly arching; green in summer, orange-tan in autumn.

• Leaves

  Flat to slightly folded blades, narrow and fine-textured; blue-green in summer; orange-red fall color.

• Flowers

  One-sided raceme with 7-50 pendant spikelets along one side of each stem; bright orange anthers at flowering give the plant vivid color before spikelets dry to tan.

• Fruit

  Small grain enclosed in the dried spikelet; spikelets remain on one-sided racemes through winter and into spring.

Bouteloua curtipendula is the most widespread grass of the mixed-grass prairie transition between the tall and shortgrass systems, and an important constituent of the shortgrass prairie of the southern Great Plains. It is named after the Spanish botanists Claudius and Esteban Boutelou, who documented the flora of Spain and the Americas in the early 19th century; curtipendula means "hanging on short stalks," referring to the distinctive pendant spikelets. Side-oats Grama was a critically important forage grass for the vast bison herds of the Great Plains and remains one of the most important warm-season range grasses in the central and southern United States. Multiple Indigenous peoples of the Great Plains used it for thatching, matting, and as a reliable indicator of good grazing land. The state legislature of Texas designated it the official state grass in 1971 in recognition of its historical and ecological significance to the region. It remains common throughout its range and is considered one of the most important restoration species for degraded Great Plains grasslands.