What is the common name for Helictotrichon sempervirens?

Helictotrichon sempervirens is commonly known as Blue Oat Grass. This ornamental grass is appreciated for its striking blue-gray foliage, which provides a unique hue in landscaping. It forms a tufted growth habit and blooms in summer with tall flower spikes that can add visual interest to gardens and landscapes. The name 'Blue Oat Grass' accurately reflects the grass's color and its resemblance to oat grasses, making it recognizable and easy to remember for gardeners and horticulturists. In contrast, the other plant options listed correspond to different species entirely, each with distinct characteristics and uses in landscaping.