Plant Detail

Juncus effusus

Juncus effuses, commonly known as soft rush, common rush, bog rush, or mat rush, is a grasslike-like, rhizomatous, wetland perennial that features smooth, upright, cylindrical, unjointed, spire-like green stems (leaves are absent) which grow in spreading basal clumps to 20-40” tall. It is one of the true rushes. It has a nearly cosmopolitan distribution, being found in many places around the world, but primarily in cool-temperate regions, particularly ones having wet soils. It is often found growing in ditches, bogs, swamps, marshes, wet pastures, and along the margins of lakes and rivers. It is infrequently found growing in tropical areas. Stems are usually solid, with the leaves typically reduced to bladeless basal sheaths. Insignificant, minute, yellowish-green to pale brown flowers blooms in one-sided clusters (many-flowered cymes) located on stem sides slightly below the stem tips. Flowers emerge in summer (July to September). Fruit is an obovoid capsule. Clumps provide a vertical accent to moist garden areas. Although the stems appear from a distance as coarse and stiff, they are soft to the touch. Soft rush is considered to be a somewhat invasive weed in several locations. Foliage turns yellow in fall before browning up for winter.

  • Grows up to 2-4 ft. tall and across (60-120 cm). This plant will spread in the landscape by rhizomes and by self-seeding.
  • Performs best in full sun in moist to wet soils. While it thrives in consistently moist garden soil, it can also be planted in standing water to 4 in. deep (10 cm).
  • This architectural grass is highly versatile. It may be grown at the edge of a pond or water garden, in boggy areas, or shallow water, and may help control soil erosion on moist banks. Great for containers too.
  • Requires very little care, is virtually disease-free, pest-free , and provides year-round interest
  • Remove dead foliage and old flowering stems in spring.
  • Propagate by division from mid-spring to early summer.

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Requirement
Hardiness 4,5,6,7,8,9
Heat Zones 4,5,6,7,8,9
Climate Zones 4, 5, 6, 7, 8, 9
Plant Type Ornamental Grasses, Perennials
Plant Family Juncaceae 
Exposure Full Sun
Season of Interest Spring, Summer, Fall, Winter, Early Spring, Mid Spring, Late Spring, Early Summer, Mid Summer, Late Summer
Height 2' - 3'
Spread 2' - 3'
Water Needs Average, High
Maintenance Low
Soil Type Clay, Loam, Acid
Characteristics Showy, Evergreen
Garden Styles Informal and Cottage, Prairie and Meadow
Planting Place Bog Gardens, Patio and Containers