Muhlenbergia lindheimeri aka Lindheimer's Muhly

Muhlenbergia lindheimeri, or Lindheimer's muhly, is a perennial ornamental grass. It belongs to Poaceae, the grass family. Its native range spans central and southwestern Texas to northeastern Mexico. It grows on limestone uplands and rocky outcrops, often near streams. These sites have well-drained soil, despite their closeness to water. Kew places the species within a subtropical climate range.

Plants form upright clumps with a fountain-like outline. They reach 2–5 feet [0.61–1.52 metres] tall. Mature clumps spread 3–4 feet [0.91–1.22 metres] wide. Growth proceeds at a moderate pace. The fine leaves give the plant a light texture. Each leaf is simple, narrow, and free of hairs. Leaves grow in an alternate arrangement and measure under an inch wide. Blue-green foliage is a key feature of this grass. Leaves can also show silver, green, or tan shades.

Loose panicles rise above the leaves in autumn. Their pale purple and grey tones soften the clump's outline. The flower display lasts well and adds seasonal interest. NC State also lists spring and summer among bloom seasons. Its main description, however, places the flowering display in fall. The fruit is a caryopsis, a type of grain. Its listed colors range from white to silver-grey. Foliage remains through winter, though much of it becomes dormant. This makes the grass semi-evergreen rather than fully evergreen.

Grow this species in full sun with good soil drainage. NC State specifies at least six hours of direct sun daily. It lists sand, loam, clay, and limestone among suitable soils. Its stated soil pH range is 6.0–8.0. The grass tolerates heat and drought and resists deer damage. It suits USDA hardiness zones 6–9. Winter cutting is not needed and may delay recovery. For tidier clumps, remove old flower stems once they turn brittle. A leaf rake can draw dead leaves from the clump. Plants can be raised from seed or divided.

Use Lindheimer's muhly as an accent, border, or foundation plant. NC State also lists rock gardens, coastal sites, and small spaces. Its upright form and fine foliage offer contrast in plantings. Livestock and wildlife graze the grass, with fair to good forage value. Birds use its leaves to build nests. The supplied sources do not establish human food uses or toxicity. They also give no specific pest or disease problems.