Helictotrichon sempervirens, commonly known as Blue Oat Grass, is an evergreen ornamental grass native to Europe. It forms neat, rounded clumps of fine steel-blue foliage, in summer, it produces tall, airy flower spikes that rise above the foliage, bearing oat-like, pale tan flowers that add movement and texture. Blue Oat Grass is frost hardy and thrives in well-drained soils with low to moderate moisture, preferring full sun for best color. It is commonly used in rock gardens, borders, and drought-tolerant plantings, valued for its color contrast, tidy form, and low maintenance needs.