Helictotrichon sempervirens (Blue Oat Grass) sitting area by stone retaining wall in California garden with Lavender, and Caryopteris.

Helictotrichon sempervirens, Blue oat grass, is a ornamental grass adapted to many summer-dry climate gardens. This perennial grass features fine-textured, steel-blue foliage that forms a neat, upright clump. Blue oat grass typically reaches a height of 2-3 feet and a spread of 1-2 feet, creating a striking focal point in the landscape.

Ideal growing conditions for Helictotrichon sempervirens include full sun and well-drained, sandy soil. This plant is drought-tolerant once established and requires minimal water in mediterranean climates. Blue oat grass is native to the Mediterranean region and is well-suited for rock gardens, borders, or mass plantings.

The distinctive blue color of Blue oat grass makes it a popular choice for adding contrast and texture to garden designs. This plant can also be used to create a soft, feathery backdrop for other flowering perennials. Consider planting Helictotrichon sempervirens alongside Lavender and Caryopteris to create a harmonious color scheme in your California garden.