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Panicum virgatum 'JS Blue Darkness' (Switch grass 'JS Blue Darkness')
1 hour care
per year
per year
1m
Max height
Max height
0.8m
Max spread
Max spread
2-5 years
To maturity
To maturity
Plant details
Botanical name
Panicum virgatum 'JS Blue Darkness'
Other names
Switch grass 'JS Blue Darkness', Panicum virgatum 'Blue Darkness'
Genus
Panicum Panicum
Variety or Cultivar
'JS Blue Darkness' _ 'JS Blue Darkness' is an upright, clump-forming, deciduous, perennial grass with flat, linear, blue-green leaves, irregularly variegated dark maroon and turning yellow in autumn. Large, airy panicles of tiny, purple flowers bloom in midsummer.
Panicum virgatum 'JS Blue Darkness' is: Deciduous
Habit
Clump-forming, Upright
Flower
Purple in Summer
Foliage
Blue-green, Variegated, Maroon in Spring; Variegated, Maroon, Blue-green in Summer; Yellow in Autumn
How to care
Watch out for
Pests
Generally pest free
Diseases
Generally disease free
General care
Pruning
Remove dead foliage and old flowered stems in spring.
Propagation methods
Division, Seed
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Where to grow
Panicum virgatum 'JS Blue Darkness' (Switch grass 'JS Blue Darkness') will reach a height of 1m and a spread of 0.8m after 2-5 years.
Suggested uses
Architectural, Beds and borders, Low Maintenance, Prairie planting, City, Cottage/Informal
Cultivation
Grow in full sun in moderately fertile, moist but well-drained soil.
Soil type
Chalky, Loamy, Sandy
Soil drainage
Well-drained
Soil pH
Acid, Alkaline, Neutral
Light
Full Sun
Aspect
South, East, West
Exposure
Exposed, Sheltered
UK hardiness Note: We are working to update our ratings. Thanks for your patience.
Hardy (H4)
Companion plants
We do not currently have companion plants added for this plant.
Botanical name
Panicum virgatum 'JS Blue Darkness'
Other names
Switch grass 'JS Blue Darkness', Panicum virgatum 'Blue Darkness'
Genus
Panicum Panicum
Variety or Cultivar
'JS Blue Darkness' _ 'JS Blue Darkness' is an upright, clump-forming, deciduous, perennial grass with flat, linear, blue-green leaves, irregularly variegated dark maroon and turning yellow in autumn. Large, airy panicles of tiny, purple flowers bloom in midsummer.
Native to
Garden origin
Foliage
Deciduous
Habit
Clump-forming, Upright
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Colour
Flower
Purple in Summer
Foliage
Blue-green, Variegated, Maroon in Spring; Variegated, Maroon, Blue-green in Summer; Yellow in Autumn
How to care
Watch out for
Pests
Generally pest free
Diseases
Generally disease free
General care
Pruning
Remove dead foliage and old flowered stems in spring.
Propagation methods
Division, Seed
Monthly care advice
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Where to grow
Panicum virgatum 'JS Blue Darkness' (Switch grass 'JS Blue Darkness') will reach a height of 1m and a spread of 0.8m after 2-5 years.
Suggested uses
Architectural, Beds and borders, Low Maintenance, Prairie planting, City, Cottage/Informal
Cultivation
Grow in full sun in moderately fertile, moist but well-drained soil.
Soil type
Chalky, Loamy, Sandy
Soil drainage
Well-drained
Soil pH
Acid, Alkaline, Neutral
Light
Full Sun
Aspect
South, East, West
Exposure
Exposed, Sheltered
UK hardiness Note: We are working to update our ratings. Thanks for your patience.
Hardy (H4)
USDA zones
Zone 9, Zone 8, Zone 7, Zone 6, Zone 5, Zone 4
In order to add a note on this plant, please add this plant to your plant lists.
| This plant likes... | Garden match | |
| Soil types: | Chalky, Loamy, Sandy | Tell us... |
| Soil drainage: | Well-drained | Tell us... |
| Soil pH: | Acid, Alkaline, Neutral | Tell us... |
| Light: | Full Sun | Tell us... |
| Aspect: | South, East, West | Tell us... |
| Exposure: | Exposed, Sheltered | Tell us... |
| Hardiness: | Hardy (H4) | Tell us... |
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