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Carex platyphylla (silver sedge)
Species Distribution Map: Click to enlarge
Map Color Key © 2013 BONAP

Carex platyphylla

silver sedge or blue satin sedge

A spectacular clump-forming sedge with powder blue leaves up to an inch or more wide. Spreads slowly to form a wonderfully textured groundcover in moist or average soil. Tolerates dry shade once established. An early spring haircut makes room for clean new growth. Great for deciduous shade.

SIZE
Carex platyphylla LP32 - 32 per flat Availability
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Height

8-12 Inches

Spread

12-18 Inches

Spacing

10 Inches

Bloom Color

Green

USDA Hardiness Zone 4-8

silver sedge Interesting Notes

Carex platyphylla grows with thick powder blue leaves into 1’ large shaggy clumps. The broad blue-tinged leaves are unusual for Carex species and provides a lovely groundcover. To maintain its color and appearance in a garden setting, it is recommended to do an early spring cut back.


Carex platyphylla grows in mesic forests and slopes, usually with high pH bedrock, along the eastern North American mountainous regions. Preferring moist to dry soil sites in sun to part shade, broadleaf sedge can grow in areas with more sun as long as consistent moisture is provided. A cool season grass flowering in early summer, Carex platyphylla is great for deciduous shade.


Like other Carex species, broadleaf sedge is a habitat and forage for many native birds and insects. We find it to spontaneously seed itself along areas around our woodland edge and seed berm, creating a low-growing and easy to maintain groundcover in areas that we battle bramble and annual weeds. It self sows in a non-aggressive manner. 

Carex platyphylla Growing and Maintenance Tips

Grow in shade or part shade in average to dry soil with good drainage. Water well on planting and regularly until established. Trim in late winter.

Key Characteristics & Attributes

Full Shade
Full Shade
Part Sun
Part Sun
Moist
Moist
Deer Resistant
Deer Resistant
Evergreen
Evergreen
Groundcover
Groundcover
Drought Tolerant
Drought Tolerant

Additional Information

Soil Moisture Needs
Average
Green Infrastructure
Meadow/Prairie
Woodland
Lawn Alternative
Plug Type
Landscape Plug™
Attributes
Native to North America
Propagation Type
Tissue culture
Grass Type
Cool Season