North America Native Plant

Creeping Waterhyssop

Botanical name: Bacopa repens

USDA symbol: BARE

Life cycle: perennial

Habit: forb

Native status: Native to the lower 48 states âš˜ Native to Puerto Rico  

Synonyms: Gratiola repens Sw. (GRRE3)  âš˜  Macuillamia obovata Raf. (MAOB3)  âš˜  Macuillamia repens (Sw.) Pennell (MARE10)   

Creeping Waterhyssop: A Native Gem for Your Water Garden If you’re looking to add some native charm to wet spots in your landscape, let me introduce you to creeping waterhyssop (Bacopa repens). This delightful little perennial might not be the showiest plant in the garden center, but it’s got some ...

Creeping Waterhyssop: A Native Gem for Your Water Garden

If you’re looking to add some native charm to wet spots in your landscape, let me introduce you to creeping waterhyssop (Bacopa repens). This delightful little perennial might not be the showiest plant in the garden center, but it’s got some serious credentials as a hardworking native that’ll make both you and local wildlife happy.

What is Creeping Waterhyssop?

Creeping waterhyssop is a low-growing, mat-forming perennial that’s native to the southeastern United States, with populations stretching from South Carolina down to Louisiana and Texas, and even making appearances in California and Puerto Rico. You might also see it listed under its scientific synonyms like Gratiola repens or Macuillamia repens in older gardening references.

This native beauty is what we call an obligate wetland plant, which is a fancy way of saying it almost always lives in wet places. Think of it as nature’s way of creating living carpet for soggy spots!

Where Does It Grow?

Creeping waterhyssop calls several states home, including California, Louisiana, South Carolina, Texas, and Puerto Rico. In the wild, you’ll find it hugging the edges of ponds, streams, and other wetland areas where its creeping stems can spread out and form dense colonies.

Why You’ll Love This Little Native

Here’s what makes creeping waterhyssop such a winner for water-loving gardeners:

  • Authentic native appeal: You’re supporting local ecosystems by choosing a plant that truly belongs in your region
  • Problem solver: Got a soggy spot where nothing else will grow? This is your answer
  • Low maintenance: Once established, it pretty much takes care of itself
  • Pollinator friendly: Those small white or pale blue flowers might be tiny, but they’re perfect for small native bees and other pollinators
  • Year-round interest: As a perennial, it provides consistent ground cover through the growing season

What Does It Look Like?

Don’t expect towering drama from creeping waterhyssop – this plant is all about subtle beauty. It forms low, spreading mats with small, oval leaves that have a slightly succulent feel. The flowers are delicate and small, typically white or very pale blue, creating a gentle carpet of blooms during its flowering period.

Perfect Garden Spots for Creeping Waterhyssop

This native shines in specific garden situations:

  • Water gardens: Plant it around pond edges or in shallow water features
  • Rain gardens: Excellent choice for areas designed to capture runoff
  • Bog gardens: Creates natural-looking ground cover in constructed wetlands
  • Problem wet spots: Transform that soggy corner of your yard into a native habitat

Growing Conditions and Care

The beauty of creeping waterhyssop is in its simplicity. Here’s what it needs to thrive:

Climate: Best suited for USDA hardiness zones 8-11, so it’s perfect for warmer regions where it naturally occurs.

Sun and Soil: Prefers full sun to partial shade and absolutely loves consistently moist to saturated soils. It can even tolerate standing water, making it perfect for areas that would stress out other plants.

Water: This is where creeping waterhyssop really shines – it needs consistent moisture. If you’ve got a spot that stays wet or even floods occasionally, this plant will be thrilled.

Planting and Care Tips

Getting creeping waterhyssop established is refreshingly straightforward:

  • Plant in spring after the last frost when soil is workable
  • Space plants about 12 inches apart – they’ll fill in quickly with their creeping habit
  • Keep consistently moist during establishment
  • Once established, minimal care is needed beyond ensuring adequate moisture
  • The plant spreads naturally through creeping stems, so give it room to roam

Wildlife and Ecosystem Benefits

By choosing this native plant, you’re doing more than just solving a landscaping challenge. Creeping waterhyssop supports local pollinators with its small but numerous flowers, and its dense mat-forming habit provides habitat for small wetland creatures. It’s also part of the natural wetland ecosystem, helping with water filtration and erosion control along water edges.

Is Creeping Waterhyssop Right for Your Garden?

This native gem is perfect if you have wet areas in your landscape that need a natural solution. It’s particularly valuable for gardeners interested in supporting native plant communities and creating habitat for local wildlife. However, if you don’t have consistently moist conditions, this probably isn’t the plant for you – it really does need that wetland environment to thrive.

For gardeners in its native range dealing with soggy spots, creeping waterhyssop offers an authentic, low-maintenance solution that works with nature instead of against it. Plus, there’s something deeply satisfying about growing a plant that truly belongs in your local ecosystem!

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

Arid West

OBL

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

Atlantic and Gulf Coastal Plain

OBL

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

Caribbean

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

Western Mountains, Valleys, and Coast

OBL

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

Creeping Waterhyssop

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

Scrophulariales

Family

Scrophulariaceae Juss. - Figwort family

Genus

Bacopa Aubl. - waterhyssop

Species

Bacopa repens (Sw.) Wettst. - creeping waterhyssop

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