Blue grama
Bouteloua gracilis · Poaceae
📷 Wikimedia Commons · Public domain
The gardener's calendar
Ideal time to plant blue grama: set it out when the soil is neither frozen nor waterlogged, and water generously as it establishes.
ID card
- Family
- Poaceae (grasses)
- Plant type
- Perennial ornamental grass
- Mature height
- 20–30 cm
- Exposure
- Full sun
- Water requirement
- Very low, drought-tolerant plant
- Flowering
- June to August
- Foliage
- Evergreen, fine and graceful
- Hardiness
- Down to –15 °C approximately
- Origin
- North America (dry prairies)
- Soil
- Well-draining, poor to moderately fertile
✓ Taxonomy verifiedSource: AI estimate · hardiness: reliability high.
Expert tips
The key tip
This grass hates standing water: sow or plant on raised ground, even slight elevation works. Once established, it needs very little maintenance and comes back reliably every year.
The common mistake
People kill it by overwatering—Bouteloua tolerates drought but dies from root asphyxia in the first wet autumn if drainage is dodgy.
The pro's trick
Direct sow in spring without transplanting: this grass doesn't like being moved around and settles in faster when sown straight in the ground.
Care
Exposure
Graceful bouteloua thrives in full sun to develop its full, compact and elegant structure. Plant it in an open location, away from shade cast by other plants or structures. Exposure to less than 6 hours of direct sunlight will slow its growth and weaken its habit.
Watering
Extremely drought-resistant once established, graceful bouteloua requires little water after its first year. Moderate watering during planting is sufficient for root development. Once mature, water only during prolonged dry spells; excess moisture risks promoting root rot.
Soil and planting
Choose well-draining, light soil, even poor or stony. This grass tolerates dry, rocky and infertile soils. Avoid heavy, clay or waterlogged soils that obstruct drainage. Adding coarse sand or gravel improves soil structure if needed.
Pruning and maintenance
Cut back or comb the clump in spring (March–April), before new growth, shortening it to three-quarters of its height. This grass needs no pruning during the growing season. Simply remove dry or damaged stems in late winter.
Fertiliser
Graceful bouteloua thrives in poor soils and requires little fertiliser. A modest application of compost in early spring is sufficient; avoid excess nitrogen, which would encourage a too-loose habit. Balanced soil at planting often suffices for its entire life.
Health and problems
This grass is very hardy against diseases and pests. In overly moist or poorly drained soil, it may suffer root rot. So ensure good drainage above all. No plant treatments are generally needed under normal conditions.
Did you know?
Graceful bouteloua is an emblematic prairie grass of the North American Great Plains, renowned for its ability to survive extreme drought. Its fine stems and particularly graduated spikelets give it an elegance highly prized in modern xeric gardens. It plays a major ecological role in stabilising soils and nourishing herbivores in arid ecosystems.
Where to buy it
Plant in spring or early autumn, avoiding spells of intense heat. Pick a plant with healthy foliage and roots that are not exposed. Best time: March, April, May, September.
Add this plant to my garden →Plants from the same family
- Tufted hair grassDeschampsia cespitosa
- Wavy hair-grassAvenella flexuosa
- Purple moor-grassMolinia caerulea
- Reed canary-grassPhalaris arundinacea
- Common quaking grassBriza media
- Creeping soft-grassHolcus mollis
Tips generated and checked by Viridia — adapt them to your local climate.