North America Native Plant

Northern Starwort

Botanical name: Stellaria calycantha

USDA symbol: STCA

Life cycle: annual

Habit: forb

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

Synonyms: Alsine calycantha (Ledeb.) Rydb. (ALCA14)  âš˜  Alsine simcoei Howell (ALSI5)  âš˜  Stellaria borealis Bigelow var. simcoei (Howell) Fernald (STBOS3)  âš˜  Stellaria calycantha (Ledeb.) Bong. var. simcoei (Howell) Fernald (STCAS3)  âš˜  Stellaria simcoei (Howell) C.L. Hitchc. (STSI2)   

Northern Starwort: A Delicate Native Ground Cover for Cool-Climate Gardens If you’re looking for a charming native ground cover that won’t take over your garden, northern starwort might just be the perfect plant for you. This petite member of the carnation family brings understated elegance to naturalized areas while supporting ...

Northern Starwort: A Delicate Native Ground Cover for Cool-Climate Gardens

If you’re looking for a charming native ground cover that won’t take over your garden, northern starwort might just be the perfect plant for you. This petite member of the carnation family brings understated elegance to naturalized areas while supporting local ecosystems.

What is Northern Starwort?

Northern starwort (Stellaria calycantha) is a native North American forb that grows as both an annual and perennial, depending on conditions. Don’t let the technical term forb intimidate you – it simply means this is a soft-stemmed flowering plant without woody growth, similar to what most people call herbs or wildflowers.

This delicate plant produces tiny white star-shaped flowers with deeply notched petals that seem to twinkle among the bright green foliage. The flowers are small but numerous, creating a subtle carpet of white stars across the ground.

Where Does Northern Starwort Grow Naturally?

Northern starwort is native throughout much of western North America, including Alaska, Canada, and the lower 48 states. You’ll find it growing naturally across an impressive range of locations including Alberta, British Columbia, Alaska, California, Colorado, Saskatchewan, Yukon, Northwest Territories, Idaho, Montana, Nevada, New Mexico, Oregon, Utah, Washington, and Wyoming.

Why Choose Northern Starwort for Your Garden?

There are several compelling reasons to consider adding this native plant to your landscape:

  • Native Plant Benefits: As a true native, it supports local ecosystems and requires fewer resources once established
  • Versatile Growth: Functions well as ground cover in naturalized areas
  • Pollinator Friendly: The small flowers attract beneficial insects including native bees and flies
  • Low Maintenance: Once established, it generally takes care of itself
  • Wetland Adaptable: Classified as Facultative Wetland, meaning it thrives in moist conditions but can also handle drier spots

Perfect Garden Settings

Northern starwort shines in several garden styles:

  • Native Plant Gardens: An authentic choice for indigenous plantings
  • Rock Gardens: The delicate flowers complement rocky textures beautifully
  • Woodland Gardens: Thrives in the dappled light of tree understories
  • Naturalized Meadows: Blends seamlessly with other native wildflowers
  • Rain Gardens: Its wetland tolerance makes it suitable for areas that occasionally flood

Growing Conditions and Care

Northern starwort is remarkably adaptable but has some preferences that will help it thrive:

Climate: Hardy in USDA zones 2-7, this plant loves cooler climates and can handle harsh winters with ease.

Light Requirements: Performs well in partial shade to full sun, though it appreciates some protection from intense afternoon sun in warmer areas.

Soil Preferences: Prefers moist, well-draining soils but shows good adaptability. Its facultative wetland status means it can handle both consistently moist and periodically dry conditions.

Watering: Once established, it’s relatively drought tolerant, though consistent moisture will keep it looking its best.

Planting and Maintenance Tips

Getting northern starwort established in your garden is straightforward:

  • Plant in early spring or fall when temperatures are cooler
  • Space plants appropriately for ground cover use
  • Water regularly during the first growing season to help establish roots
  • Mulch lightly to retain moisture and suppress weeds
  • Allow some plants to go to seed if you want natural spreading
  • Minimal fertilization needed – native soil is usually sufficient

Supporting Local Wildlife

While northern starwort may look delicate, it plays an important role in supporting local ecosystems. The small flowers provide nectar for tiny native pollinators, and the plant serves as part of the complex web of native flora that many creatures depend on.

Is Northern Starwort Right for Your Garden?

Consider northern starwort if you’re looking for a low-key native plant that adds subtle beauty without demanding attention. It’s perfect for gardeners who appreciate understated elegance and want to support local ecosystems. However, if you’re seeking bold, showy flowers or rapid ground coverage, you might want to look at more vigorous options.

This gentle native offers the satisfaction of growing something truly indigenous to North America while creating habitat for beneficial insects. For gardeners in cooler climates who want to embrace native plant gardening, northern starwort represents an excellent choice that’s both beautiful and ecologically responsible.

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

FACW

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

Arid West

FACW

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

Great Plains

FACW

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

Western Mountains, Valleys, and Coast

FACW

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

Northern Starwort

Classification

Group

Dicot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Magnoliopsida - Dicotyledons

Subclass

Caryophyllidae

Order

Caryophyllales

Family

Caryophyllaceae Juss. - Pink family

Genus

Stellaria L. - starwort

Species

Stellaria calycantha (Ledeb.) Bong. - northern starwort

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