Juncus Effusus ‘Spiralis’

Botanical Name: Juncus effusus ‘Spiralis’

Corkscrew rush (sometimes called Juncus spiralis) is a novelty cultivar with captivating coiled stems, spreading out in every direction as they grow.

If you like unusual indoor plants, you’ll want to add this spectacular ornamental to your collection. Stunning on its own, corkscrew rush also adds some sizzle among a display of leafy and flowering plants. In fact, those curly-Q stems are sometimes used in florists’ bouquets.

Perennial and evergreen, this is an easy-care house plant. It adds a lot of personality to a room for little effort.

Green Thumb Tip

Constantly wet soil is needed to keep Juncus effusus ‘Spiralis’ healthy and thriving.

Water generously. Don’t allow the soil to dry out. Foliage will turn yellow then brown if it gets too dry. It’s a good idea to keep your corkscrew rush plant in a pot without a drainage hole. Juncus is native to marsh areas, so it loves soggy soil — even standing water.

Shed some light. Put your Juncus plant in your sunniest window — or shift it outdoors for the spring and summer. It will tolerate lower light levels, but won’t grow much. If you don’t have a spot near a window, grow lights work beautifully.

Repot in spring, moving up to a container 1 size larger when it becomes crowded. Juncus is fast-growing when it gets the sunlight and water it wants. You may need to divide it every spring.

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Juncus Effusus ‘Spiralis’ Care Tips

Origin: ‘Spiralis’ is a cultivar of Juncus effusus, native to Japan.

Height: 2-3 ft (60-90 cm)

Light: Give it as much full sun as you can. It will tolerate some indirect light.

Water: Keep the soil wet at all times — standing water is ideal. Native to marshlands, this is one plant you can’t overwater.

Humidity: Try to maintain 40-50% relative humidity. Discover easy ways to increase humidity around your plant.

Temperature: Average to warm room temperatures (65-80°F/18-27°C) year-round. If you put this tender ornamental out on the patio for the summer, bring it back in when the temperature drops. It won’t tolerate frost.

Soil: Peat moss-based potting mix, such as African violet mix.

Fertilizer: Feed once a month spring through fall with a balanced liquid or water-soluble fertilizer.

Propagation: In spring, divide the plant by gently pulling the fleshy roots apart or cut through them with a knife; then pot separately.

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Juncus spiralis growing herbaceous of the genus Juncus also known as Juncus effusus Spiralis or Corkscrew rush, Juncus spiralis perennial plant used as ornamental water plant, can grow in temperate, mediterranean, desert, subtropical or tropic climate and growing in hardiness zone 4+

Stem color green in linear shape the stem grow in spiral shape

Juncus spiralis flower

Flower color can be: pink, yellow or brown, flowers grow on stems.

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Juncus SpiralisCorkscrew rushDescriptionJuncus effusus ‘SpiralisJuncus Spiralis plant

How to grow Juncus spiralis growing and care:

Aquatic environment or wet soil, rich soil

What is the best way to start growing?
Plant / Seed / Vegetative reproduction

Is it necessary to graft or use vegetative reproduction?
No, but increase the chances to get spiral and not straight

Difficulties or problems when growing:

Planting season:
Spring / Summer / Autumn

Pests and diseases:

Pruning season:
Summer / Autumn / Winter

How to prune:
Dead stems

Size of the plant:
20-50cm, 8-20 inches

Growth speed in optimal condition:
Fast growing / Medium growing

Water requirement:
Average amount of water / Big amount of water

Light conditions in optimal condition for growing:
Full sun / Half shade

Is it possible to grow as houseplant?

Growing is also possible in a planter /flowerpot / containers:

Blooming information

Bloom season?
Summer / Autumn

General information about the flower:
Pink, yellow or brown flowers that grow on stems

Scientific name:

Juncus effusus Spiralis

Blooming Seasons

  • Autumn flowers
  • Summer flowers

Flower Colors

  • Brown flowers
  • Pink flower
  • Yellow flower


  • Desert Climate
  • Mediterranean Climate
  • Subtropics Climate
  • Temperate Climate
  • Tropics Climate

Ornamental parts

  • Ornamental flower
  • Ornamental leaves
  • Ornamental plant

Plant growing speed

  • Average growing plants
  • Fast growing plants

Plant life-form

  • Herbaceous
  • Perennial plant

Plant uses

  • Ground cover plants
  • Ornamental plants
  • Water plants

Planting season

  • Autumn Planting
  • Spring Planting
  • Summer planting

Plants sun exposure

  • Full sun Plants
  • Part shade Plants

Watering plants

  • Big amount of water
  • Regularly water

Hardiness zone

  • Hardiness zone 10
  • Hardiness zone 11
  • Hardiness zone 12
  • Hardiness zone 13
  • Hardiness zone 4
  • Hardiness zone 5
  • Hardiness zone 6
  • Hardiness zone 7
  • Hardiness zone 8
  • Hardiness zone 9

Juncus effusus f. spiralis (Corkscrew rush)

Botanical name

Juncus effusus f. spiralis

Other names

Corkscrew rush, Scirpus lacustris ‘Spiralis’ , Juncus effusus ‘Spiralis’


Juncus Juncus


J. effusus f. spiralis – J. effusus f. spiralis is an evergreen perennial grown for its curious clumps of spiralling, leafless, dark-green stems. Flowers, if produced, are brown and insignificant.





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Brown, Insignificant or absent in Summer

How to care

Watch out for


Generally pest-free


Generally disease-free

General care


Tidy by removing dead stems and any spent flowerheads in spring

Propagation methods


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Where to grow

Juncus effusus f. spiralis (Corkscrew rush) will reach a height of 0.45m and a spread of 0.6m after 2-5 years.

Suggested uses

Aquatic, Bog garden, Waterside


Plant in the shallow margins of pools or consistently moist, acidic soil in full sun or partial shade.

Soil type

Clay, Loamy

Soil drainage

Boggy damp conditions, Moisture-retentive, Pond/In water

Soil pH



Partial Shade, Full Sun


South, East, West


Exposed, Sheltered

UK hardiness Note: We are working to update our ratings. Thanks for your patience.

Hardy (H4)

USDA zones

Zone 9, Zone 8, Zone 7, Zone 6, Zone 5, Zone 4

Defra’s Risk register #1

Plant name

Juncus effusus f. spiralis (Corkscrew rush)

Common pest name

Scientific pest name

Xiphinema bricolense



Current status in UK


Likelihood to spread to UK (1 is very low – 5 is very high)

Impact (1 is very low – 5 is very high)

General biosecurity comments

EU regulated nematode pest with the potential to introduce non-European viruses. EU listing and regulations on soil/growing material associated with planting material help to mitigate the risk of entry.

Defra’s Risk register #2

Juncus effusus f. spiralis (Corkscrew rush)

Bactra bactrana



Moth whose larvae feed on sedge and grass stems; found (in 2014) to be damaging glasshouse peppers in Greece. Industry may wish to monitor for its presence.

About this section

Our plants are under greater threat than ever before. There is increasing movement of plants and other material traded from an increasing variety of sources. This increases the chances of exotic pests arriving with imported goods and travellers, as well as by natural means. Shoot is working with Defra to help members to do their part in preventing the introduction and spread of invasive risks.

Traveling or importing plants? Please read “Don’t risk it” advice here

Suspected outbreak?

Date updated: 7th March 2019 For more information visit:

Curly Wurly Corkscrew Rush foliage

Curly Wurly Corkscrew Rush foliage

(Photo courtesy of NetPS Plant Finder)

Height: 18 inches

Spread: 18 inches


Hardiness Zone: 4b


A superb plant with very curious twisted, spiraling foliage, well suited to aquatic containers and boggy, poorly drained areas; best used in the foreground or in a container

Ornamental Features

Curly Wurly Corkscrew Rush’s attractive twisted grassy leaves remain green in color throughout the season. It features subtle bracted brown frilly flowers at the ends of the stems from early summer to early fall. The fruit is not ornamentally significant.

Landscape Attributes

Curly Wurly Corkscrew Rush is an open herbaceous perennial grass with an upright spreading habit of growth. Its relatively fine texture sets it apart from other garden plants with less refined foliage.

This is a relatively low maintenance plant, and is best cut back to the ground in late winter before active growth resumes. It has no significant negative characteristics.

Curly Wurly Corkscrew Rush is recommended for the following landscape applications;

  • Mass Planting
  • Border Edging
  • General Garden Use
  • Container Planting
  • Bog Gardens

Planting & Growing

Curly Wurly Corkscrew Rush will grow to be about 18 inches tall at maturity, with a spread of 18 inches. Its foliage tends to remain dense right to the ground, not requiring facer plants in front. It grows at a fast rate, and under ideal conditions can be expected to live for approximately 8 years.

This plant does best in full sun to partial shade. It prefers to grow in moist to wet soil, and will even tolerate some standing water. It is not particular as to soil type, but has a definite preference for acidic soils, and is able to handle environmental salt. It is highly tolerant of urban pollution and will even thrive in inner city environments. This is a selection of a native North American species.

Curly Wurly Corkscrew Rush is a fine choice for the garden, but it is also a good selection for planting in outdoor pots and containers. It is often used as a ‘filler’ in the ‘spiller-thriller-filler’ container combination, providing a mass of flowers and foliage against which the larger thriller plants stand out. Note that when growing plants in outdoor containers and baskets, they may require more frequent waterings than they would in the yard or garden.

Care Of Corkscrew Rush: Tips For Growing Corkscrew Rush Plants

The corkscrew rush is a very versatile plant. It thrives equally well in well-drained soil or slightly boggy or marsh areas. Perennial corkscrew rush makes an excellent plant for use near a water feature, in container gardens or even as an indoor specimen. The other name for corkscrew rush, Juncus effuses “Spiralis”, refers to the spiral habit of this grass-like plant. Try growing corkscrew rush anywhere that plentiful water is available.

Corkscrew Rush-Juncus Effuses Info

This is one of those plants that just makes you smile, with the unruly foliage that springs unbridled from a cluster of stems. Corkscrew rush is a cultivar of a plant native to Japan. This horticultural hybrid was bred for the whimsical foliage. The round blades twist gently from the base all the way up to the top of the foliage. Deep green leaves often bear some striping, providing showy plants for partially shady areas.

You can grow corkscrew rush plants in USDA plant hardiness zones 4 to 9. The only limitation when growing corkscrew rush is very dry or arid conditions.

Growing Corkscrew Rush

Corkscrew rush plants produce best in full sun, except in zones with unrelenting heat. In the hotter areas, they will do just fine in a partially shady area or where there is shelter from midday sun.

Perennial corkscrew rush thrives in any type of soil including sand, loam or even mixed clay. Extremely dry areas are not suitable for the plant unless you provide superior irrigation and ensure the soil doesn’t dry out.

Corkscrew rush plants are not susceptible to many pests or disease and are very tolerant to most climates. Care of corkscrew rush should include maintenance pruning for appearance, watering and annual fertilizing.

Care of Corkscrew Rush

The perennial corkscrew rush is semi-evergreen. In the higher zones it will remain green throughout winter, but colder areas see the foliage turning brown. You can cut the foliage back when this occurs in very early spring to make way for new leaves.

Fertilize in early spring with an all-purpose water soluble fertilizer.

Watch for pests and disease and combat with appropriate solutions. Avoid fungal problems on the leaves by providing water under the leaves.

Indoor plants will need to be repotted every two or three years. Use a potting soil with plenty of compost and peat mixed into the basic blend. Keep container plants very moist and never let them dry out.

Uses for Corkscrew Rush Plant

Place the rush in groups along the edge of a pond or water feature. You can also partially submerge them in shallow or boggy areas.

Pot up a corkscrew rush with other water lovers, such as Japanese iris, cattails, dwarf papyrus or yellow flag. Use corkscrew rush in partially shady areas as fun borders.

Your imagination and too much dryness are all that keep you from using this amazing plant in many different ways.

Juncus, Corkscrew Rush ‘Curly Wurly’


Ornamental Grasses and Bamboo

Ponds and Aquatics

Water Requirements:

Unknown – Tell us

Sun Exposure:

Light Shade


Grown for foliage

Foliage Color:

Unknown – Tell us


6-12 in. (15-30 cm)


Unknown – Tell us


USDA Zone 4a: to -34.4 °C (-30 °F)

USDA Zone 4b: to -31.6 °C (-25 °F)

USDA Zone 5a: to -28.8 °C (-20 °F)

USDA Zone 5b: to -26.1 °C (-15 °F)

USDA Zone 6a: to -23.3 °C (-10 °F)

USDA Zone 6b: to -20.5 °C (-5 °F)

USDA Zone 7a: to -17.7 °C (0 °F)

USDA Zone 7b: to -14.9 °C (5 °F)

USDA Zone 8a: to -12.2 °C (10 °F)

USDA Zone 8b: to -9.4 °C (15 °F)

USDA Zone 9a: to -6.6 °C (20 °F)

USDA Zone 9b: to -3.8 °C (25 °F)

USDA Zone 10a: to -1.1 °C (30 °F)

USDA Zone 10b: to 1.7 °C (35 °F)

Where to Grow:

Unknown – Tell us


Unknown – Tell us

Bloom Color:

Unknown – Tell us

Bloom Characteristics:

Unknown – Tell us

Bloom Size:

Unknown – Tell us

Bloom Time:

Unknown – Tell us

Other details:

May be a noxious weed or invasive

Soil pH requirements:

Unknown – Tell us

Patent Information:

Unknown – Tell us

Propagation Methods:

By dividing the rootball

Seed Collecting:

Unknown – Tell us


This plant has been said to grow in the following regions:

Tuscaloosa, Alabama

Anchorage, Alaska

Bakersfield, California

Hemet, California

New Britain, Connecticut

Wellborn, Florida

Litchfield, Maine

Cincinnati, Ohio

Cleveland, Ohio

Conway, South Carolina

Boerne, Texas

Dallas, Texas

Euless, Texas

Lubbock, Texas

New Braunfels, Texas

Waco, Texas

Mukwonago, Wisconsin

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