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‘Dewey Blue’ is a cultivar that typically grows 3-4’ tall and is noted for its attractive powder blue foliage and fountain-like form. Blue-tinged flowers appear in late summer to early fall, followed by beige seed heads that persist well into winter. Stems reportedly retain vertical form without flopping throughout the growing season and into winter. (Courtesy of Missouri Botanical Gardens Plant Finder)
Grow in average, well-drained, dry to medium moisture soils in full sun to part shade. Performs well in infertile sandy loams. May flop in overly rich soils. Will grow in light shade, but begins to lose form in too much shade, growing more openly and possibly falling over. Grows primarily in clumps, but may slowly spread by creeping rhizomes. Cut back clumps to the ground in late winter to early spring. (Courtesy of Missouri Botanical Gardens Plant Finder)
| Common Name | Dewey Blue Switchgrass |
|---|---|
| Botanical Name | Panicum amarum 'Dewey Blue' |
| Container/Amount | 1 gallon |
| Evergreen or Deciduous | Deciduous |
| Hardiness Zone | 2a, 2b, 3a, 3b, 4a, 4b, 5a, 5b, 6a, 6b, 7a, 7b, 8a, 8b, 9a, 9b |
| Growth Rate | Fast |
| Light Requirements | Part-sun, Sun |
| Height | 3 to 4' |
| Width | 2-3 ft. |
| Soil Condition | Well-drained to dry |
| Water Needs | Average to low |
| Blooming Period | Summer |
| Flower Color | Pale Blue |
| Fragrance | No |
| Foliage Color | Blue -green |
| Deer Resistant | Yes |
