Helictotrichon sempervirens (Blue Oat Grass) Gray foliage grass in California garden with Fremontodendron (Flannel Bush).

Helictotrichon sempervirens, commonly known as blue oat grass, is a drought-tolerant ornamental grass perfectly suited for mediterranean summer-dry climates. This perennial grass features striking gray-blue foliage that adds texture and color to any garden setting. Blue oat grass forms dense clumps of arching, narrow leaves that can reach up to 2 feet in height and spread.

Ideal growing conditions for Helictotrichon sempervirens include full sun and well-drained soil. This grass is relatively low-maintenance and requires minimal water once established. Its native habitat includes regions of Europe, such as the Mediterranean, where it thrives in dry conditions.

Blue oat grass can be used in a variety of ways in the garden, from mass plantings to border edging to container gardening. Its unique appearance and adaptability make it a versatile choice for adding visual interest to summer-dry landscapes. Consider planting Helictotrichon sempervirens alongside other drought-tolerant plants like Fremontodendron (Flannel Bush) for a cohesive and water-wise garden design.