North America Native Plant

Creeping-bluet

Botanical name: Oldenlandiopsis callitrichoides

USDA symbol: OLCA4

Life cycle: annual

Habit: forb

Native status: Non-native, reproduces and persists in the wild in Hawaii âš˜ Native to the lower 48 states âš˜ Native to Puerto Rico âš˜ Native to the U.S. Virgin Islands  

Synonyms: Hedyotis callitrichoides (Griseb.) W.H. Lewis (HECA20)  âš˜  Oldenlandia callitrichoides Griseb. (OLCA)   

Creeping-Bluet: A Tiny Treasure for Wet Spots in Your Garden If you’ve got a soggy spot in your yard that seems impossible to fill, let me introduce you to a little plant with a big personality: creeping-bluet (Oldenlandiopsis callitrichoides). This unassuming native might just be the perfect solution for those ...

Creeping-Bluet: A Tiny Treasure for Wet Spots in Your Garden

If you’ve got a soggy spot in your yard that seems impossible to fill, let me introduce you to a little plant with a big personality: creeping-bluet (Oldenlandiopsis callitrichoides). This unassuming native might just be the perfect solution for those challenging wet areas that leave most gardeners scratching their heads.

What Exactly Is Creeping-Bluet?

Creeping-bluet is a charming little forb that forms low, spreading mats across the ground. Don’t let its small stature fool you – this native plant packs a punch when it comes to covering ground and adding delicate beauty to your landscape. As both an annual and perennial (depending on conditions), it’s remarkably adaptable to different growing situations.

You might also see this plant listed under its former scientific names, including Hedyotis callitrichoides or Oldenlandia callitrichoides, so don’t be confused if you encounter these synonyms in older gardening references.

Where Does It Call Home?

Creeping-bluet is a true native of the southeastern United States and Caribbean region. You’ll find it naturally occurring in Florida, Puerto Rico, and the U.S. Virgin Islands. However, it has also established itself in Hawaii, where it’s considered non-native but appears to be naturalizing without causing significant ecological disruption.

Why Consider Creeping-Bluet for Your Garden?

This little ground-hugger offers several compelling reasons to earn a spot in your landscape:

  • Perfect for problem areas: Thrives in those persistently moist spots where other plants struggle
  • Low maintenance: Once established, it pretty much takes care of itself
  • Native benefits: Supports local ecosystems in its native range
  • Delicate beauty: Small white flowers add subtle charm without overwhelming other plants
  • Versatile wetland plant: Works in both wetland and slightly drier conditions

Garden Design and Landscape Role

Creeping-bluet shines as a ground cover in naturalized areas, rain gardens, and bog gardens. Its low, mat-forming habit makes it excellent for filling in gaps between larger plants or carpeting areas around ponds and water features. Because it stays close to the ground, it won’t compete with taller native plants but instead creates a lovely living mulch beneath them.

This plant is particularly well-suited for:

  • Rain gardens and bioswales
  • Native plant gardens
  • Pond and water garden edges
  • Naturalized wetland areas
  • Low-maintenance landscapes

Growing Conditions and Care

The beauty of creeping-bluet lies in its adaptability. In the Atlantic and Gulf Coastal Plain regions, as well as the Caribbean, it’s classified as a facultative wetland plant, meaning it’s happiest in wet conditions but can tolerate some drier periods. Interestingly, in Hawaii, it tends to prefer slightly drier upland conditions while still tolerating some moisture.

For best results, provide:

  • Moisture: Consistently moist to occasionally wet soil
  • Sun exposure: Full sun to partial shade
  • USDA Hardiness Zones: 8-11
  • Soil type: Adapts to various soil types as long as moisture needs are met

Planting and Maintenance Tips

Once you’ve decided creeping-bluet is right for your garden, establishment is relatively straightforward. The plant spreads naturally, so a little goes a long way. Plant in spring after the last frost, ensuring the soil stays consistently moist during establishment.

Maintenance is minimal – this is truly a plant it and forget it kind of species. Just ensure adequate moisture, especially during dry spells, and let it do its thing.

A Note for Hawaiian Gardeners

If you’re gardening in Hawaii, while creeping-bluet isn’t native to your islands, it doesn’t appear to be problematic either. However, you might want to consider native Hawaiian ground covers like ‘ae’ae (Bacopa monnieri) or native sedges for wet areas to better support local wildlife and ecosystems.

Wildlife and Pollinator Benefits

While creeping-bluet may be small, its tiny white flowers can attract small pollinators and beneficial insects. In its native range, it’s part of the complex web of plants that support local wildlife, though specific wildlife benefits aren’t well-documented for this particular species.

The Bottom Line

Creeping-bluet is one of those quietly valuable plants that solves problems without making a fuss. If you have wet, challenging areas in your landscape and you’re within its native range or hardiness zone, this little ground cover could be exactly what you need. It won’t steal the show, but it’ll reliably fill in those tricky spots while adding its own subtle charm to your garden tapestry.

For such a small plant, creeping-bluet offers big solutions – sometimes the best garden additions are the ones that work hard behind the scenes!

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

FACW

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

Caribbean

FACW

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

Hawaii

FACU

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

Creeping-bluet

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

Rubiales

Family

Rubiaceae Juss. - Madder family

Genus

Oldenlandiopsis Terrell & W.H. Lewis - creeping-bluet

Species

Oldenlandiopsis callitrichoides (Griseb.) Terrell & W.H. Lewis - creeping-bluet

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