Native Plants

Narrowleaf Bur-reed

Sparganium angustifolium

USDA symbol: SPAN2

perennial forb

Alaska: native
Canada: native
Greenland: native
Lower 48 states: native
St. Pierre and Miquelon: native

If you’re looking to add some wild, architectural flair to your water garden or bog area, narrowleaf bur-reed (Sparganium angustifolium) might just be the native plant you never knew you needed. This perennial wetland beauty brings a touch of untamed elegance to any aquatic landscape with its grass-like foliage and ...

Narrowleaf Bur-reed may be listed as rare in your area.
New Jersey

Status: Endangered, Listed Pinelands, Highlands Listed, SH | Endangered. In danger of extinction throughout all or a significant portion of its range.

Narrowleaf Bur-Reed: A Native Aquatic Gem for Water Gardens

If you’re looking to add some wild, architectural flair to your water garden or bog area, narrowleaf bur-reed (Sparganium angustifolium) might just be the native plant you never knew you needed. This perennial wetland beauty brings a touch of untamed elegance to any aquatic landscape with its grass-like foliage and quirky, ball-shaped flower heads that look like nature’s own geometric art project.

What Makes Narrowleaf Bur-Reed Special

Narrowleaf bur-reed is a true North American native, naturally occurring across an impressively wide range from Alaska and Greenland all the way down through most of the lower 48 states and Canadian provinces. You’ll find this adaptable plant thriving in states from coast to coast, including Alaska, California, Maine, Colorado, and everywhere in between. It’s a testament to this plant’s hardiness that it can handle everything from the frigid Arctic to more temperate southern regions.

  • Species observed
  • No observations

This perennial forb (that’s botanist-speak for a non-woody plant) has earned its place as an obligate wetland species across all regions of North America. Translation? This plant is practically married to water and wet conditions – it almost always grows in wetlands, making it a reliable choice for consistently moist garden spots.

A Word of Caution: Rarity Matters

Before you rush out to find this plant, there’s something important to know. In New Jersey, narrowleaf bur-reed is listed as endangered and protected in both the Pinelands and Highlands regions. If you’re gardening in areas where this plant is rare, please only source it from reputable native plant nurseries that propagate their stock responsibly – never collect from wild populations.

Garden Design and Landscape Role

Narrowleaf bur-reed shines in:

  • Water gardens and pond margins
  • Rain gardens and bioswales
  • Bog gardens
  • Naturalized wetland areas
  • Native plant landscapes with consistent moisture

The plant’s narrow, grass-like leaves create lovely textural contrast against broader-leafed wetland companions, while its distinctive spherical seed heads add architectural interest that lasts well into fall and winter.

Growing Conditions and Care

This is definitely not a plant for your average flower border! Narrowleaf bur-reed has very specific moisture requirements:

  • Moisture: Consistently wet soil to shallow standing water
  • Light: Full sun to partial shade
  • Hardiness: Extremely cold tolerant, suitable for zones 2-8
  • Soil: Any soil type, as long as it stays wet

Planting and Maintenance Tips

Once you’ve found a responsibly-sourced plant, narrowleaf bur-reed is surprisingly low-maintenance – if you can meet its water needs. Plant it at the edge of a pond, in a bog garden, or anywhere you have consistently saturated soil. The plant will naturalize over time, spreading to form colonies in ideal conditions.

Minimal care is needed once established. You can cut back the foliage in late winter if desired, though many gardeners prefer to leave the interesting seed heads for winter interest and wildlife food.

Wildlife and Ecological Benefits

While narrowleaf bur-reed doesn’t attract pollinators (it’s wind-pollinated), it provides valuable habitat and food for wildlife. The seeds are particularly important for waterfowl, and the plant’s structure offers shelter for various aquatic creatures and insects.

Is Narrowleaf Bur-Reed Right for Your Garden?

This native beauty is perfect for gardeners who want to create authentic wetland habitats or who have naturally boggy areas that need some interesting vegetation. However, it’s definitely a specialized plant – if you don’t have consistently wet conditions, this isn’t the plant for you.

Consider narrowleaf bur-reed if you have a water feature, rain garden, or naturally wet area and want to support native ecosystems while adding unique architectural interest to your landscape. Just remember to source responsibly and appreciate that you’re growing a piece of North America’s natural wetland heritage.

Sparganium angustifolium is also known as...

Often we refer to plants by their common names. When shopping for plants the scientific name is the best way to positively identify the plant species you desire. But some plants have more than one name! While it doesn't happen often, nurseries might display one name while you're searching for another. Sparganium angustifolium is also known as:

Sparganium emersum Rehmann var. angustifolium Roy Taylor & MacBryde | USDA symbol: SPEMA
Sparganium emersum Rehmann var. multipedunculatum | USDA symbol: SPEMM
Sparganium multipedunculatum | USDA symbol: SPMU3

Why do some plants have more than one name? Over time plant species may be renamed for a few reasons:

  1. Botanists in different regions named the same plant without knowing it had already been classified.
  2. A species was reclassified after scientific advances in, for example, DNA analysis.
  3. Slight variations within a species are sometimes mistakenly identified as entirely new species.

Classification

Group: Monocot
Kingdom: Plantae - Plants
Subkingdom: Tracheobionta - Vascular plants
Superdivision: Spermatophyta - Seed plants
Division: Magnoliophyta - Flowering plants
Class: Liliopsida - Monocotyledons
Subclass: Commelinidae
Order: Typhales
Family: Sparganiaceae Hanin - Bur-reed family
Genus: Sparganium L. - bur-reed

Species: Sparganium angustifolium Michx. - narrowleaf bur-reed

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