Blue Oat Grass
- Botanical Name
- Helictotrichon sempervirens
- Hardiness
- Zones 4 to 9
- Height
- 2 to 3 feet
- Width
- 2 to 3 feet
- Flowers
- Early summer: pale blue
- Light
- Full sun
- Soil
- Moist, well-drained
- Planting & Care
- Cut back in late winter before new growth begins or let new growth mask the old
- Over-watering and over-fertilizing can lead to root rot
- Problems
- Rust in humid weather
- Varieties
- Saphirsprudel - German introduction, rust resistant
- Sapphire - finer, bluer foliage than species
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