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Chasmanthium latifolium
River Oats, Northern Sea Oats Zones: 5, 6, 7, 8, 9
Fairly common in the southeast in low damp open woods, stream margins, and ditches, River Oats is an attractive, upright arching grass resembling somewhat the more familiar Sea Oats of southern sand dunes. In full sun, it grows 3 feet tall with leaves 1/2 inch in width. In some shade, expect taller plants that may need some staking. The flower/seed heads of River Oats which are effective from midsummer through mid-fall, are especially attractive. Long oblong, 3 by 1/2 inch wide spikelets with a distinct herringbone pattern are paper flat and pendant on thread-like pedicels dangling like earrings. These appear in arching sprays above the foliage and gracefully shimmer in the breeze. Summer color is medium green turning to yellow then brown in fall. Grow River Oats in sun to part shade, and dry to wet. It spreads moderately by rhizomes and also naturalizes by seed. We like it with Boltonia, Turtlehead, Orange Coneflower, and New England Aster. Cat# 1047

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X Native Plant Good Fragrance Butterfly Plant
Hummingbird Plant X Good Fall Color X Berries & Fruits
X Deer resistant
Ease of Culture
X Easy Not Too Hard Difficult or Tricky
Evergreen
Yes Semi X No
Plant Type
Wildflower Shrub X Grass or grass-like
X Perennial Tree X Ground cover
Fern Vine
Light Exposure
X Full sun X Mostly sunny X Half and half
Full shade Mostly shady
Soil Condition
X Sandy Organic
X Clay X Average
Moisture Tolerance
X Dry Wet
X Moist X Moderate
Height
12" or less
24" to 36"
12" to 24" X 36" or taller
Color
White/whitish Pink Blue
Yellows Rose Green
Orange, coral Violet X Brown
Peach, salmon Lavender Mauve
Red, scarlet Purple X Tan
Bloom Time
Early spring Early summer X Early fall
Mid spring X Mid summer X Mid fall
Late spring X Late summer Late fall


We welcome your suggestions and comments. Please tell us how we can improve, or if there are other plants you wish we carried.

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