Native Plants

Bog Chickweed

Stellaria alsine

USDA symbol: STAL4

annual forb

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

If you’ve got a soggy spot in your yard that makes you scratch your head wondering what to plant, let me introduce you to bog chickweed (Stellaria alsine). This little native charmer might just be the perfect solution for those persistently wet areas where other plants fear to tread. Bog ...

Bog Chickweed: A Tiny Native Treasure for Wet Spots

If you’ve got a soggy spot in your yard that makes you scratch your head wondering what to plant, let me introduce you to bog chickweed (Stellaria alsine). This little native charmer might just be the perfect solution for those persistently wet areas where other plants fear to tread.

What Is Bog Chickweed?

Bog chickweed is a delicate annual forb that belongs to the carnation family. Don’t let the chickweed name fool you into thinking it’s a weedy nuisance – this native beauty serves an important ecological role. As a forb, it’s a non-woody plant that completes its life cycle in just one growing season, but don’t worry about replanting every year – it’s quite good at reseeding itself.

You might also see this plant listed under its synonyms Alsine uliginosa or Stellaria uliginosa in older gardening references, but they’re all the same helpful little plant.

Where Does Bog Chickweed Call Home?

This adaptable native has quite an impressive range! Bog chickweed is native throughout Canada and the lower 48 states, making it a truly continental species. You’ll find it growing naturally from British Columbia to Newfoundland, and from Florida up to Maine, with populations scattered across the Midwest and western states including Oregon and Washington.

  • Species observed
  • No observations

Why Your Wet Garden Needs Bog Chickweed

Here’s where bog chickweed really shines – it’s what botanists call an obligate wetland plant in most regions. This means it almost always occurs in wetlands and thrives in conditions that would drown most garden plants. If you have:

  • A rain garden that stays soggy
  • A low spot that collects water
  • Consistently moist soil near downspouts
  • A naturalized wetland area

Then bog chickweed could be your new best friend! It forms delicate, low-growing mats that help stabilize soil and prevent erosion in wet areas.

What Does It Look Like?

Bog chickweed won’t win any prizes for showiness, but its subtle beauty has its own charm. The plant produces tiny white, star-shaped flowers that seem to float above small, oval leaves. It stays quite low to the ground, creating a fine-textured carpet effect. The delicate flowers attract small beneficial insects, adding to your garden’s biodiversity.

Growing Bog Chickweed Successfully

The best part about bog chickweed? It’s remarkably easy to grow if you can meet its one key requirement: consistently moist to wet soil. Here’s what this little native needs:

Light: Full sun to partial shade – it’s quite flexible

Soil: Wet, soggy, or consistently moist conditions

Hardiness: Zones 3-8, making it suitable for most of North America

Care: Practically none! Once established, it takes care of itself

Planting and Care Tips

Since bog chickweed is an annual that readily self-seeds, your main job is getting it established in the right spot. Here are some tips for success:

  • Scatter seeds in late fall or early spring in wet areas
  • No need to cover seeds deeply – they prefer surface sowing
  • Keep the area consistently moist (which shouldn’t be hard in a naturally wet spot!)
  • Allow plants to go to seed for natural reproduction
  • Avoid fertilizing – it prefers lean, wet soils

Is Bog Chickweed Right for Your Garden?

Bog chickweed is perfect for gardeners who want to work with nature rather than against it. If you’ve been fighting a losing battle trying to dry out a wet spot, why not embrace it instead? This native plant will help you create a naturalized wet area that supports local wildlife while requiring virtually no maintenance.

However, if you’re looking for a showy display plant or need something for dry conditions, bog chickweed probably isn’t your best choice. Its subtle beauty and specific habitat requirements make it ideal for naturalistic plantings rather than formal garden beds.

Consider bog chickweed as part of a larger wetland garden, paired with other moisture-loving natives like cardinal flower, monkey flower, or native sedges. Together, they’ll create a thriving ecosystem in your own backyard – and you’ll never have to worry about that soggy spot again!

Stellaria alsine 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. Stellaria alsine is also known as:

Alsine uliginosa | USDA symbol: ALUL
Stellaria uliginosa | USDA symbol: STUL

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.

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 care and fewer inputs. But the simplicity of this catchphrase conceals how tricky plant selection can be if you don't have the right information. While tags on nursery plants 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. You might be surprised to learn that popular landscape plants are wetland species! And what may be a wetland plant in one area, in another it might thrive in drier conditions. The table below gives insight into the preferred growing conditions of this plant throughout its geographical distribution.

Region
Preferred Habitat

Arid West (AZ, CA, CO, ID, MT, NV, NM, OR, TX, UT, WA, WY)

Obligate Wetland

Atlantic and Gulf Coastal Plain (AL, AR, DC, DE, FL, GA, IL, KY, LA, MD, MS, MO, NC, NJ, OK, PA, SC, TN, TX, VA)

Obligate Wetland

Eastern Mountains and Piedmont (AL, AR, DC, DE, GA, IL, IN, KS, KY, MD, MO, NC, NJ, NY, OH, OK, PA, SC, TN, VA, WV)

Obligate Wetland

Midwest (IL, IN, IA, KS, KY, MI, MN, MO, NE, ND, OK, OH, SD, WI)

Obligate Wetland

Northcentral & Northeast ()

Obligate Wetland

Western Mountains, Valleys, and Coast (AZ, CA, CO, ID, MT, NV, NM, OR, SD, UT, WA, WY)

Facultative
Wetland Glossary
Obligate Wetland
Facultative Wetland
Facultative
Facultative Upland
Obligate Upland
Almost always occurs in wetlands
Usually occurs in wetlands but may occur in non-wetlands
Can occur in wetlands and non-wetlands
Usually occurs in non-wetlands but may occur in wetlands
Almost never occurs in wetlands

Classification

Group: Dicot
Kingdom: Plantae - Plants
Subkingdom: Tracheobionta - Vascular plants
Superdivision: Spermatophyta - Seed plants
Division: Magnoliophyta - Flowering plants
Class: Magnoliopsida - Dicotyledons
Subclass: Caryophyllidae
Order: Caryophyllales
Family: Caryophyllaceae Juss. - Pink family
Genus: Stellaria L. - starwort

Species: Stellaria alsine Grimm - bog chickweed

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