Northern Sea Oats
Chasmanthium latifolium
Filtered sun, Partial shade, Partial sun
Keep soil moist, but not soggy.
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Botanical Pronunciation | chas-MAN-thee-um lat-ee-FOH-lee-um |
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Average Size at Maturity | Foliage clumps quickly reach 2 to 3 ft. tall, 2 ft. wide. |
Bloom Time | Summer |
Deciduous/ Evergreen | Herbaceous |
Flower Color | Green |
Foliage Color | Green |
Garden Style | Contemporary, Cottage, Rustic |
Growth Habit | Clumping |
Growth Rate | Fast |
Landscape Use | Mass Planting, Very Wet Areas, Water Garden, Woodland Garden, Cutting Garden, Coastal Exposure |
Light Needs | Filtered sun, Partial shade, Partial sun |
Soil Needs | All-Purpose Plant Food |
Special Feature | Clump Forming, Extreme Cold Hardiness, North American Native Selection, Tolerates Wet Soils, Fast Growing, Bird Friendly |
Water Needs | High |
Watering Needs | Keep soil moist, but not soggy. |
Companion Plants | Sweetspire (Itea); Iris (Iris); Turtlehead (Chelone); Coneflower (Echinacea); Cardinal Flower (Lobelia) |
Grows easily in average to poor soils; thrives in enriched, moist soils. Water deeply and regularly during first growing season to establish an extensive root system; once established, water as needed to maintain evenly moist soil. Leave foliage through winter to protect the clump; hard prune before new growth emerges.
This Plant's Growing Zones: 4-9

Your USDA Cold Hardiness Zone:
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