Description
Product Description
Panicum virgatum ‘Dallas Blue’ (Dallas Blue Switchgrass) is a standout selection of native Switchgrass celebrated for its powdery steel-blue foliage, sturdy upright habit, and airy late-summer seed clouds that glow in low light. Strong vertical clumps hold form through wind and weather, then shift to warm amber tones in fall and persist into winter for four-season structure. Exceptionally adaptable—from dry to periodically wet soils—‘Dallas Blue’ shines in meadows, screens, streetscapes, and low-maintenance borders where movement, texture, and durability matter.
Quick-Glance Specs
| Attribute | Details |
| Botanical Name | Panicum virgatum ‘Dallas Blue’ |
| Common Name | Dallas Blue Switchgrass |
| Plant Type | Warm-season perennial bunchgrass |
| Native/Non-native | Native species; cultivar selection |
| Hardiness Zone | 4–9 |
| Sun Exposure | Full sun (tolerates light shade; best color/upright form in sun) |
| Moisture | Dry to medium; tolerates periodic wetness and clay soils |
| Mature Height | 4–6 ft foliage; 6–7.5 ft in bloom (site dependent) |
| Mature Spread | 2–3 ft clump |
| Growth Habit | Strongly upright, clumping; deep, fibrous roots |
| Growth Rate | Moderate |
| Fragrance | None |
| Bloom Time | Late summer to fall (fine, airy panicles) |
| Seasonal Interest | Summer–winter; steel-blue foliage, golden fall color; persistent winter stems |
| Foliage & Features | Distinct powder-blue foliage; delicate “cloud” seed heads |
| Landscape Features | Drought and salt tolerance, erosion control, wildlife cover/seed |
| Landscape Uses | Meadows, massing, screens, streetscapes, bioswales, slopes, restoration |
| Soil | Average to lean; tolerates clay and shallow, rocky soils; avoid soggy shade |
| Water Needs | Low to medium after establishment |
| Maintenance | Low; cut back late winter/early spring |
| Deer/Pest Resistance | Generally deer resistant; few serious pests |
| Container Friendly | Best in large containers with excellent drainage |
| Recommended Spacing | 24–36 in (60–90 cm) |
Care & Growing Information
- Site & Light: Plant in full sun for the bluest foliage, most upright habit, and best bloom.
- Soil & Water: Thrives in well-drained to moderately moist soils; handles clay, periodic wet, and summer drought once established.
- Fertility: Keep nutrients moderate to lean—excess fertility or irrigation can cause flopping and mute the blue color.
- Planting: Set crowns level with soil; space 24–36″ for airflow and vertical poise. Water to establish, then reduce.
- Maintenance: Cut back to 6–8″ in late winter/early spring before new growth. Divide every 3–5 years if clumps thin.
Key Features
- Striking powder-blue foliage with a strong, upright silhouette
- Drought and salt tolerant; handles clay and periodic wet
- Airy, late-season seed clouds and warm fall color
- Excellent erosion control and wildlife value
- Minimal care and broad site adaptability
Problems
- Few serious issues. Can flop in shade or overly rich/wet soils. Occasional leaf spot/rust in stagnant humidity—ensure spacing and airflow.
Uses in the Landscape
- Screens/backdrops for borders and pollinator meadows
- Bioswales, rain-garden shoulders, and roadside plantings (salt tolerant)
- Slopes for erosion control with ornamental appeal
- Prairie-style massing for movement and texture
Availability / Ordering
- Sizes Offered: #1 Gallon
- Recommended Spacing: 24–36″ for upright clumps and airflow.
Why You’ll Love It
- Eye-catching blue foliage plus shimmering seed clouds
- Tough, water-wise performance across diverse soils
- Easy care—cut back once a year and enjoy
Quick Highlights
A resilient blue switchgrass with upright form and airy panicles—‘Dallas Blue’ delivers movement, color, and habitat value from sun-baked meadows to functional bioswales.
