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Grass · Easy

How to Grow Japanese Sedge

Carex morrowii 'Ice Dance'

Your complete guide to growing Japanese Sedge.

☀SunFull sun to partial shade (4-6+ hours)
💧WaterModerate, tolerates both wet and dry conditions
🗺Zones5–9
📏Height12-18 inches
Japanese Sedge📷 Wikimedia Commons

When to Plant Japanese Sedge

Planting windows vary by USDA hardiness zone. Look up yours by ZIP code.

ZoneStart IndoorsDirect SowHarvest
Zone 5 — April – June —
Zone 6 — April – June —
Zone 7 — March – May —
Zone 8 — March – May —
Zone 9 — February – April —

Companion Plants for Japanese Sedge

✓ Good companions

Astilbe

Thrives in same moist, partially shaded conditions and provides colorful contrast

Begonia

Compatible moisture and light requirements, provides flowering interest among grass foliage

Caladium

Both prefer partial shade and consistent moisture, colorful leaves complement grass texture

Ferns

Share preference for moist, shaded areas and create natural woodland plant community

Heuchera

Compatible growing conditions and complementary foliage colors enhance garden design

Hosta

Similar shade and moisture requirements, creates layered texture in woodland gardens

Impatiens

Shade-loving annual that thrives in same moist conditions, adds seasonal color

Japanese Painted Fern

Similar cultural needs and silvery foliage provides beautiful contrast to sedge texture

✗ Keep away from

Black Walnut

Produces juglone toxin that inhibits growth of many plants including ornamental grasses

Eucalyptus

Allelopathic compounds in leaves and roots suppress growth of nearby plants

Mint

Aggressive spreading habit can overwhelm and crowd out sedge plantings

Notes from the garden

A greener inbox, occasionally.

Seasonal planting ideas, useful tips and a little inspiration. No weeds.