Carex platyphylla

broad-leaved sedge (silver sedge)

This lovely, low, unctuously textured sedge brings blue blue-silver clumps to moist or average soils, and can tolerate dry shade once established. We recommend it as an under-utilized groundcover. It benefits from a single clipping in early spring to stimulate freshly colored growth.



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Height: 8-12 in
Spread: 12-18 in
Hardiness Zone: 4-8


Characteristics & Attributes

Cultivation Status
• Species
Exposure
• Part Shade
• Shade
Soil Moisture
• Dry
• Average
Ecoregion
• (84) Atlantic Coastal Pine Barrens
• (82) Acadian Plains and Hills
• (58) Northeastern Highlands
• (83) Eastern Great Lakes Lowlands
• (59) Northeastern Coastal Zone
Attracts Wildlife
• Host Plant
• Other Pollinators/Wildlife
Tolerance
• Drought Tolerant
Additional Attributes
• Low Maintenance
Landscape Use
• Naturalize
• Specimen
• Massing
Growth Habit
• Compact/Clumping


North American Distribution


General Description

Bloom Description: Blooms June into August. Green inflorescences are held on long, arching stalks. They are not showy.

Growth Habit & Shape: Carex platyphylla creates a broad mound of foliage.

Soil Preferences: Average to dry, often found in high pH soils.

Root Description: Carex platyphylla has a fibrous root system.

Garden Uses: Shade gardens, dry shade, especially under deciduous trees.

Best Management & Maintenance: Low maintenance. Flower stalks can be cut back for tidier appearance.

Common Problems: None.

Benefits

Ornamental Value: The broad, bluish leaves of this sedge add interest to just about any shady garden bed. Provides visual interest in shady spots when few things are blooming.

Wildlife Benefits: Various insects feed on the foliage of sedges (Carex spp.). Broadleaf sedge in particular hosts species of Satyr larvae.

Other Practical/Environmental Benefits:

Use in place of: Miniature hostas.

Ecology

Habitat:
Carex platyphylla inhabits deciduous forests, often on high pH bedrock.


Response to Disturbance: Drought tolerant.

Native State Distributions:
Canada: CAN: MB, NB, ON, QC, SKU
USA: AL, AR, CT, DC, DE, FL, GA, IA, IL, IN, KS, KY, MA, MD, ME, MI, MN, MO, MS, NC, ND, NE, NH, NJ, NY, OH, OK, PA, RI, SC, SD, TN, TX, VA, VT, WI, WV


Wetland indicator status: Not classified.

Companion Plants:
Creeping phlox (Phlox stolonifera), foam-flower (Tiarella cordifolia), white wood-aster (Eurybia divaricata)

References

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broad-leaved sedge - Carex platyphylla from Native Plant Trust