Blue oat grass

Helictotrichon sempervirens


Blue oat grass is a striking evergreen perennial grass with distinctive blue-gray foliage and a clumping habit that can reach 24-30 in. high. Tall wheat colored inflorescences develop in early summer and grow 6-12 in. above foliage.

Blue oat grass is well suited as a contrasting element in mixed perennial plantings, rock gardens and containers. Native to the western Mediterranean region, it is a cool season grass that grows best with good drainage and regular moisture throughout the year; avoid planting in garden spaces with hot afternoon sun. It grows well in containers, along dry stream beds and among flowering perennials on banks and in parkways.

Plant Type: Grass
Foliage Character: Evergreen
Habit: Upright, Graceful, Clumping
Growth Rate: Moderate
Foliage Color: Blue green
Flower Color: Cream
Flower Season: Summer
Soil Adaptations: Well-draining soil
Exposure Adaptations: Wind, Heat, Cold hardy, All day sun
Function: Rock gardens, Residential spaces, Raised planters, Parks and open space, Grouped, Foliage accent plant, Container plant, Commercial spaces, Borders, Banks, Small spaces
Height: 24 in. – 30 in.
Width: 24 in. – 30 in.