Spiralis Juncus ‘Corkscrew Rush Grass’

Juncus effusus 'Spiralis'

Family: Rush

Type: Ornamental grass

Corkscrew Rush Grass, known botanically as Juncus effusus ‘Spiralis’, is a unique and visually striking ornamental grass. It is characterized by its twisted, spiraling stems that add an element of whimsy to any garden setting.

This plant is not only eye-catching but also versatile, thriving in a variety of conditions. Corkscrew Rush is perfect for adding texture and interest to different landscapes, from garden beds to containers.

Thriving in full sun to partial shade, Corkscrew Rush Grass is hardy in zones 4-9. It prefers moist to wet soil, making it an excellent choice for water gardens or damp areas in the landscape.

Needs & Preferences

Hardiness Zone: 4b-4a

Pet Friendly: Yes

Moisture Preference: Moist to wet

Sun Needs: Full sun to partial shade


Growth Rate: Fast

Average Height (feet): 1.5

Average Spread (feet): 1.5

Average Life Span (years): 8

Form: Upright spreading


Flower Color: Brown

Flower Shape: Frilly

Bloom Season: From early summer to early fall

Foliage Color: Green

Foliage Shape: Grassy

Landscaping Your Yard With Corkscrew Rush Grass

Incorporating Corkscrew Rush Grass into your garden design provides a distinctive and artistic touch. Its unusual growth habit makes it a conversation starter and focal point in any landscape.

This grass is ideal for water features, container gardens, or as an accent in mixed borders. Its adaptability to both soil and water planting makes it a versatile addition to various garden styles.

Despite its exotic appearance, Corkscrew Rush Grass is easy to care for. It’s a great choice for gardeners looking for an ornamental grass that offers both beauty and low maintenance.


Suitable Garden Styles

Water Garden

In a water garden, Corkscrew Rush Grass thrives. Its preference for moist conditions and unique form make it a standout feature alongside ponds or streams.

Contemporary Garden

For contemporary gardens, this grass's modern and unusual appearance fits perfectly. It adds an artistic flair to minimalistic and modern landscapes.

Container Garden

In container gardens, Corkscrew Rush Grass brings height and intrigue. It's perfect for adding vertical interest to patios, decks, or balconies.

Corkscrew Rush Grass Landscaping Ideas

Use it as a feature plant in a rock garden. Its spiraling stems contrast beautifully with the hard, angular lines of rocks.

Plant it in groups for a dramatic effect. Grouping several plants together creates a visual impact with their unique twisted stems.

Combine it with flowering perennials in mixed beds. Its structural form provides a striking backdrop for colorful blooms.

Seasonal Interest


In spring, Corkscrew Rush Grass starts to grow its iconic spiraling stems, adding interest and movement to the garden.


During summer, the plant maintains its lush, green appearance. Its twisted stems continue to fascinate and draw attention.


In the fall, Corkscrew Rush Grass begins to die back. The plant prepares for dormancy while still providing structural interest in the garden.


In winter, Corkscrew Rush Grass may go dormant, depending on the climate. In milder regions, it can retain some of its quirky structure even in the cold months.

Planting Tips

Where to Plant

Corkscrew Rush Grass is best planted in areas with full sun to partial shade. It’s ideal for damp areas in your yard, such as near water features, in rain gardens, or in moist, low-lying spots.


This plant thrives best in full sun to partial shade. Adequate sunlight encourages the healthiest growth and the most pronounced spiral stem formation.


Corkscrew Rush Grass prefers moist to wet soil and is tolerant of a range of soil types, including clay. It thrives in soil that is consistently damp.


Space Corkscrew Rush plants about 12 to 18 inches apart. This spacing allows each plant enough room to grow and showcase its unique spiraling stems.

When to Plant

The best time to plant is in the spring or early fall. Planting during these cooler temperatures helps the plant establish roots without the stress of extreme heat or cold.

How to Plant

Dig a hole slightly deeper and wider than the root ball. Place the plant in the hole, backfill with soil, and water thoroughly. Ensure the crown is just below soil level.

Plant Care Tips


Regular watering is essential, especially during dry periods. Corkscrew Rush Grass thrives in consistently moist or wet conditions.


Fertilize in early spring with a balanced, slow-release fertilizer to encourage robust growth throughout the growing season.


Minimal pruning is required. Dead or damaged stems can be trimmed back in early spring to maintain the plant’s appearance.

By Season


Spring Care

In spring, remove any old, dead stems and apply a layer of mulch to retain moisture. Begin regular watering as new growth starts.

Summer Care

Continue to ensure the soil remains moist throughout the summer. This is particularly important in hot, dry weather.

Fall Care

Reduce watering as the plant begins to go dormant. Clean up any fallen leaves to keep the area tidy.

Winter Care

Corkscrew Rush Grass may go dormant in winter. In milder climates, it can retain some structure; otherwise, it will die back and re-emerge in spring.


How Tall Does Corkscrew Rush Grass Grow?

Corkscrew Rush Grass typically reaches about 18-24 inches in height, with its spiral stems adding visual height and interest.

Is Corkscrew Rush Grass Deer Resistant?

Corkscrew Rush Grass is relatively deer-resistant. While no plant is completely immune, it’s less likely to be a target for deer browsing.

Can Corkscrew Rush Grass Grow in Standing Water?

Yes, Corkscrew Rush Grass can grow in standing water, making it ideal for pond margins and other water features in the garden.

Products That Feature This Plant

Sheer Harmony

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