Blue Oat Grass
What: Helictotrichon sempervirens is a tidy ornamental grass featuring arching, narrow steel-blue foliage that remains attractive year-round. This drought-tolerant perennial produces straw-colored plumes that emerge during summer months and persist into fall.
Best use: Blue Oat Grass is perfect for beds, borders, and rock gardens where its fine, delicate texture creates visual interest. It works beautifully as border edging and in alpine gardens, adding architectural structure with its mounded growth habit.
Plant Details
| Height | 24 inches (up to 3 feet in flower) |
| Spread | 24 inches |
| Hardiness Zone | 3 |
| Sunlight | Full sun |
| Watering | Prefers average to dry conditions; may require supplemental watering during drought |
| Growth Rate | Medium |
| Maintenance | Low; best cut back to ground in late winter before growth resumes |
| Uses | Rock gardens, border edging, general garden use |
| Bloom Time | Mid-summer to late fall |
| Flower Color | Tan seed heads on plumes |
