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A mature Japanese Sedge (Carex morrowii) growing in a residential garden bedFoliage

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Japanese Sedge

Carex morrowii

Japanese Sedge is a slow-growing perennial, hardy in USDA zones 5-9, that matures to about 1-1.5 ft × 1.5-2 ft. It does best in part shade and full shade with high water needs in moist soil. Expect green blooms in spring and summer. It attracts small mammals and songbirds, stands up well to wet soil, grows happily in containers.

USDA zones
5-9
Sun
Part shade, Full shade
Water
High
Mature size
1-1.5 ft × 1.5-2 ft
Growth rate
Slow
Maintenance
Low
Soil
Moist
Bloom color
Green
Bloom season
Spring, Summer
Attracts
Small mammals, Songbirds
Tough against
Wet soil
Native to
Southern and central Japan

Freeze survival

Will it survive your winters?

We score Japanese Sedge’s freeze-trouble range against the real coldest nights your area has recorded.

Powered by ~35 years of daily lows from the nearest NOAA weather station. A risk read, not a guarantee — a sheltered spot or mature plant beats the odds.

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