Juncus effusus, Soft rush

Soft rush, Bog Rush
Juncus effusus

Hardiness: Zones 4-9
Plant type: Rush
Height: 2- 4'
Spread: 2- 4'
Sun: Full sun
Water: Wet, tolerates standing water
Bloom time: June to August
Bloom color: Yellowish green
Soil: Wet, poor draining, neutral pH soil.  Performs well in standing water up to 4” deep, and can grow in sand, silt, gravel, clay and loam soils.

Notes: Helps control erosion on river banks, spreads by rhizomes

More informationon this plant here.