North America Native Plant

Narrow-wing Water-starwort

Botanical name: Callitriche stenoptera

USDA symbol: CAST11

Life cycle: perennial

Habit: forb

Native status: Native to Alaska âš˜ Native to Canada âš˜ Native to the lower 48 states  

Narrow-Wing Water-Starwort: A Hidden Gem for Wetland Gardens If you’re looking to create a natural water feature or restore a wetland area, you might want to get acquainted with narrow-wing water-starwort (Callitriche stenoptera). This unassuming little native plant might not win any beauty contests, but it plays an important role ...

Narrow-Wing Water-Starwort: A Hidden Gem for Wetland Gardens

If you’re looking to create a natural water feature or restore a wetland area, you might want to get acquainted with narrow-wing water-starwort (Callitriche stenoptera). This unassuming little native plant might not win any beauty contests, but it plays an important role in aquatic ecosystems and could be exactly what your water garden needs.

What is Narrow-Wing Water-Starwort?

Narrow-wing water-starwort is a perennial forb – basically a soft-stemmed plant without woody tissue that comes back year after year. Don’t expect towering heights or showy blooms; this is a modest aquatic plant that forms delicate rosettes of narrow, linear leaves. It’s the kind of plant that works behind the scenes, creating habitat and adding subtle texture to water features.

Where Does It Naturally Grow?

This water-starwort is a true North American native, naturally occurring across a vast range that includes Alaska, much of Canada, and numerous states in the western and northern United States. You’ll find it growing wild in Alberta, British Columbia, Manitoba, Ontario, Saskatchewan, Newfoundland, Arizona, Colorado, Idaho, Minnesota, Montana, Nebraska, New Mexico, Oregon, Utah, and Wyoming.

The Wetland Specialist

Here’s where things get interesting: narrow-wing water-starwort is what botanists call an obligate wetland plant in most regions. This means it almost always needs wet conditions to survive and thrive. In the Western Mountains, Valleys, and Coast region, it’s considered facultative wetland, meaning it usually prefers wet spots but can occasionally tolerate drier conditions.

Should You Plant It in Your Garden?

The honest answer? Only if you have the right conditions. This isn’t a plant for traditional flower beds or even most rain gardens. Narrow-wing water-starwort is best suited for:

  • Natural pond edges and shallow water areas
  • Wetland restoration projects
  • Specialized aquatic gardens
  • Areas with consistent standing water or very boggy conditions

If you’re working on creating habitat for native wildlife or restoring natural wetlands, this little plant could be a valuable addition. While it may not provide significant benefits to pollinators (its tiny flowers are wind-pollinated), it does contribute to the overall ecosystem health of aquatic environments.

Growing Conditions and Care

Successfully growing narrow-wing water-starwort means mimicking its natural habitat:

  • Water requirements: Needs shallow standing water or consistently saturated soil
  • Light: Thrives in full sun to partial shade
  • Soil: Prefers muddy, organic-rich substrates
  • Climate: Hardy in USDA zones 3-7, based on its natural distribution

Planting and Care Tips

If you decide this specialized native is right for your wetland project, here’s how to give it the best start:

  • Plant in spring when water temperatures begin to warm
  • Ensure consistent shallow water (1-6 inches deep) or saturated soil conditions
  • Choose a location with at least partial sun exposure
  • Allow space for natural spreading – it will form colonies over time
  • Minimal maintenance required once established in suitable conditions

The Bottom Line

Narrow-wing water-starwort isn’t for every garden, but it’s perfect for the right situation. If you’re passionate about native plants, working on wetland restoration, or creating specialized aquatic habitat, this humble little plant deserves consideration. Just remember – it’s all about location, location, location. Give it the wet conditions it craves, and it will quietly do its part in supporting North America’s aquatic ecosystems.

For most home gardeners, there are probably showier native options that will provide more visual impact and broader wildlife benefits. But for those special wetland projects? Narrow-wing water-starwort might just be the perfect understated addition your water feature needs.

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

Alaska

OBL

Obligate Wetland - Plants with this status almost always occurs in wetlands

Arid West

OBL

Obligate Wetland - Plants with this status almost always occurs in wetlands

Great Plains

OBL

Obligate Wetland - Plants with this status almost always occurs in wetlands

Midwest

OBL

Obligate Wetland - Plants with this status almost always occurs in wetlands

Western Mountains, Valleys, and Coast

FACW

Facultative Wetland - Plants with this status usually occurs in wetlands but may occur in non-wetlands

Narrow-wing Water-starwort

Classification

Group

Dicot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Magnoliopsida - Dicotyledons

Subclass

Asteridae

Order

Callitrichales

Family

Callitrichaceae Link. - Water-starwort family

Genus

Callitriche L. - water-starwort

Species

Callitriche stenoptera Lansdown - narrow-wing water-starwort

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