North America Non-native Plant

Queensland Sedge

Botanical name: Cyperus hyalinus

USDA symbol: CYHY7

Life cycle: annual

Habit: grass

Native status: Non-native, reproduces and persists in the wild in the lower 48 states  

Synonyms: Kyllinga hyalina (Vahl) T. Koyama (KYHY)   

Queensland Sedge: A Non-Native Sedge for Wet Gardens If you’ve been searching for a grass-like plant that thrives in soggy spots, you might have come across Queensland sedge (Cyperus hyalinus). This unassuming little sedge has quietly made itself at home in Florida’s wetlands, though it’s actually a world traveler from ...

Queensland Sedge: A Non-Native Sedge for Wet Gardens

If you’ve been searching for a grass-like plant that thrives in soggy spots, you might have come across Queensland sedge (Cyperus hyalinus). This unassuming little sedge has quietly made itself at home in Florida’s wetlands, though it’s actually a world traveler from tropical Africa and Asia. Let’s dive into what makes this plant tick and whether it deserves a spot in your garden.

What Exactly is Queensland Sedge?

Queensland sedge is an annual member of the sedge family (Cyperaceae), which means it completes its entire life cycle in just one growing season. Don’t let the common name fool you – while it’s called Queensland sedge, this plant isn’t actually native to Australia or North America. It’s a classic example of a plant that’s picked up regional names as it’s spread around the globe.

You might also see this plant listed under its botanical synonym, Kyllinga hyalina, in older gardening references. But whether you call it Queensland sedge or use its scientific name Cyperus hyalinus, you’re talking about the same unassuming little plant.

Where You’ll Find It Growing

In the United States, Queensland sedge has established itself in Florida, where it’s considered a non-native species that reproduces on its own in the wild. It’s particularly at home in the Atlantic and Gulf Coastal Plain region, where its facultative wetland status means it’s equally happy in wet and somewhat drier conditions.

The Look and Feel

Queensland sedge won’t win any beauty contests, but it has its own subtle charm. This grass-like plant produces thin, narrow leaves and small, inconspicuous brown flower clusters that won’t add much pizzazz to your landscape. Think of it as the wallflower of the sedge world – it blends into the background rather than demanding attention.

As an annual, it will complete its growth cycle within one season, so don’t expect it to be a permanent fixture unless it self-seeds successfully in your garden.

Should You Plant Queensland Sedge?

Here’s where things get interesting. While Queensland sedge isn’t invasive or noxious (as far as current data shows), it’s also not native to North American ecosystems. This means it’s not providing the same ecological benefits that our local wildlife has evolved to depend on.

If you’re looking for a sedge for wet areas, consider these fantastic native alternatives instead:

  • White-topped sedge (Rhynchospora colorata) – stunning white bracts
  • Hop sedge (Carex lupulina) – excellent for rain gardens
  • Fox sedge (Carex vulpinoidea) – tough and adaptable
  • Fringed sedge (Carex crinita) – beautiful drooping seed heads

If You Choose to Grow It

Should you decide Queensland sedge fits your specific needs, here’s how to keep it happy:

Growing Conditions

  • Moisture: Loves consistently moist to wet soil – perfect for those soggy spots where other plants struggle
  • Light: Thrives in full sun but tolerates partial shade
  • Soil: Not picky about soil type as long as it stays moist
  • Climate: Best suited for USDA hardiness zones 8-11

Care and Maintenance

One of Queensland sedge’s selling points is its low-maintenance nature. Once established, it pretty much takes care of itself. Since it’s an annual, you won’t need to worry about dividing or long-term care – it’ll either self-seed for next year or you can start fresh.

The plant can handle periodic flooding, making it useful for rain gardens or areas with variable moisture levels. Just remember that facultative wetland status means it’s adaptable – it can handle both wet and moderately dry conditions.

Wildlife and Pollinator Value

Unlike many of our native sedges that provide crucial habitat and food for local wildlife, Queensland sedge offers minimal benefits to pollinators and other creatures. As a wind-pollinated species, it doesn’t produce the nectar or pollen that our native bees and butterflies need.

The Bottom Line

Queensland sedge is a perfectly adequate plant for specific situations – mainly wet areas where you need something low-maintenance and unobtrusive. However, given the wealth of beautiful native sedges available, why not choose plants that support your local ecosystem while providing equal or better garden performance?

If you’re dealing with a challenging wet spot and native options haven’t worked for you, Queensland sedge might be worth a try. Just remember that every plant choice is an opportunity to support native wildlife, and our local sedges are truly underappreciated garden gems waiting for their moment to shine.

Wetland Status

The rule of seasoned gardeners and landscapers is to choose the "right plant for the right place" matching plants to their ideal growing conditions, so they'll thrive with less work and fewer inputs. But the simplicity of this catchphrase conceals how tricky plant selection is. While tags list watering requirements, there's more to the story.

Knowing a plant's wetland status can simplify the process by revealing the interaction between plants, water, and soil. Surprisingly, many popular landscape plants are wetland species! And what may be a wetland plant in one area, in another it might thrive in drier conditions. Also, it helps you make smarter gardening choices and grow healthy plants with less care and feeding, saving you time, frustration, and money while producing an attractive garden with greater ecological benefits.

Regions
Status
Moisture Conditions

Atlantic and Gulf Coastal Plain

FAC

Facultative - Plants with this status can occur in wetlands and non-wetlands

Queensland Sedge

Classification

Group

Monocot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Liliopsida - Monocotyledons

Subclass

Commelinidae

Order

Cyperales

Family

Cyperaceae Juss. - Sedge family

Genus

Cyperus L. - flatsedge

Species

Cyperus hyalinus Vahl - Queensland sedge

Plant data source: USDA, NRCS 2025. The PLANTS Database. https://plants.usda.gov,. 2/25/2025. National Plant Data Team, Greensboro, NC USA