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Corkscrew Rush Juncus effusus 'Spiralis'

Previously known as:

  • Juncus effusus ssp. spiralis
Phonetic Spelling
JUN-kus eff-YOO-sus spir-AH-liss
Description

Corkscrew Rush is an easy to grow ornamental rush form of Juncus effusus with interesting twisted stems. This wetland perennial grass is a rush or sedge found in bogs, marshes, and swamps and is native over large portions of temperate climates of the world.  Varieties can be found throughout the United States except for South Dakota, Wyoming, and Utah.  These plants are located in almost every county in North Carolina. 

'Sparilis' has no leaves, but the stems are attractive, corkscrews which are both upright and prostrate, cylindrical, green, and smooth.   They grow into a mass to form a clump 12 - 18 inches in height and equal spread.  The late summer-blooming flowers are yellowish-green to brown in many-flowered cymes with an obovoid capsule following as fruit. 

It can grow with  1 to 6 inches of water over the crown and works well in containers of 2 gallons or larger.   They prefer full sun but can tolerate some shade.  They require consistently moist soil and they grow well in pots and as houseplants.   

Spreading and propagation are by division of the rhizomes and self-seeding which can be difficult to manage.  Planting the rhizomes in in-ground pots with the lip above ground can help limit the spread.  In zones with warm winters they can remain evergreen.  In cooler climes, the foliage becomes yellow, then brown in fall to winter dying back to the ground. 

This variety is more conducive to being a specimen plant than the straight stemmed variety and can be a graceful addition to patios or ponds.

More information on Juncus effusus.

See this plant in the following landscape:
Cultivars / Varieties:
Tags:
#water garden#houseplant#perennials#specimen#easy to grow#piedmont#interiorscape#riparian#accent plant#wetlands#playground#NC native#perennial grasses#children's garden#mountains#marshes#clumping#native water plant#Coastal OBL#Piedmont Mountains FACW#wet soils tolerant#patio planting#HS302#rushes#bog gardens#container plants
 
Cultivars / Varieties:
Tags:
#water garden#houseplant#perennials#specimen#easy to grow#piedmont#interiorscape#riparian#accent plant#wetlands#playground#NC native#perennial grasses#children's garden#mountains#marshes#clumping#native water plant#Coastal OBL#Piedmont Mountains FACW#wet soils tolerant#patio planting#HS302#rushes#bog gardens#container plants
  • Attributes:
    Genus:
    Juncus
    Species:
    effusus
    Family:
    Juncaceae
    Life Cycle:
    Perennial
    Recommended Propagation Strategy:
    Division
    Play Value:
    Textural
    Dimensions:
    Height: 1 ft. 0 in. - 1 ft. 6 in.
    Width: 1 ft. 0 in. - 1 ft. 6 in.
  • Whole Plant Traits:
    Plant Type:
    Houseplant
    Ornamental Grasses and Sedges
    Water Plant
    Woody Plant Leaf Characteristics:
    Semi-evergreen
    Habit/Form:
    Clumping
    Erect
    Mounding
    Growth Rate:
    Slow
    Maintenance:
    Low
  • Cultural Conditions:
    Light:
    Full sun (6 or more hours of direct sunlight a day)
    Partial Shade (Direct sunlight only part of the day, 2-6 hours)
    Soil Texture:
    Clay
    Loam (Silt)
    Sand
    Soil pH:
    Neutral (6.0-8.0)
    Soil Drainage:
    Moist
    Occasional Flooding
    Occasionally Wet
    Available Space To Plant:
    Less than 12 inches
    12 inches-3 feet
    NC Region:
    Coastal
    Mountains
    Piedmont
    USDA Plant Hardiness Zone:
    5b, 5a, 6b, 6a, 7b, 7a, 8b, 8a, 9b, 9a, 10b, 10a, 11a, 11b
  • Fruit:
    Fruit Type:
    Capsule
    Fruit Description:
    Obovoid
  • Flowers:
    Flower Color:
    Cream/Tan
    White
    Flower Bloom Time:
    Summer
    Flower Shape:
    Irregular
    Flower Size:
    < 1 inch
    Flower Description:
    Spikey irregular yellowish-green to brown many-flowered cyme Small scaly flowers from July to September.
  • Leaves:
    Woody Plant Leaf Characteristics:
    Semi-evergreen
    Leaf Color:
    Green
    Hairs Present:
    No
    Leaf Description:
    Bladeless green basal sheaths surrounding stems
  • Stem:
    Stem Color:
    Green
    Stem Is Aromatic:
    No
    Stem Description:
    Contorted to corkscrew, dark green needle-like stems.
  • Landscape:
    Landscape Location:
    Pond
    Riparian
    Landscape Theme:
    Children's Garden
    Water Garden
    Design Feature:
    Accent
    Specimen
    Resistance To Challenges:
    Wet Soil