RR1 switchgrass
Panicum virgatum 'RR1'
USDA zones4 to 9
SunHandles full sun to partial sun
WaterHandles dry to wet soil
Sizeup to 4 feet tallup to 2.5 feet wide
- Growth rate
- Moderate
- Habit
- Clumping
- Bloom season
- Summer, autumn, winter
- Bloom color
- Smoky purple
- Fall color
- Yes
- Soil types
- Sand, clay
Garden uses
Attracts
Notes
'RR1' switchgrass (Panicum virgatum 'RR1') is a clumping grass for borders, accents, winter interest, and rain gardens. It is hardy to USDA zone 4, or down to -30°F (-34°C). This plant likes full or part sun and dry to wet, sandy or clay soil. Smoky purple blooms appear in summer, and butterflies and birds visit the plant. Deer tend to browse other plants first. It reaches about 48 inches tall and 30 inches wide.
Pairs well with Little bluestem, Great blue lobelia, and Red twig dogwood.