North America Native Plant

Piedmont Primrose-willow

Botanical name: Ludwigia arcuata

USDA symbol: LUAR8

Life cycle: perennial

Habit: forb

Native status: Native to the lower 48 states  

Synonyms: Ludwigiantha arcuata (Walter) Small (LUAR15)   

Piedmont Primrose-Willow: A Rare Native Gem for Your Wetland Garden If you’re looking to add a touch of delicate beauty to your wetland garden while supporting native biodiversity, piedmont primrose-willow (Ludwigia arcuata) might just be the perfect addition. This charming southeastern native brings both ecological value and subtle elegance to ...

Rare plant alert!

Region: Alabama

Status: S1: Status is uncertain but is somewhere between the following rankings: Critically Imperiled: Extremely rare due to factor(s) making it especially vulnerable to extinction. Typically 5 or fewer occurrences or very few remaining individuals (<1,000) ⚘

Piedmont Primrose-Willow: A Rare Native Gem for Your Wetland Garden

If you’re looking to add a touch of delicate beauty to your wetland garden while supporting native biodiversity, piedmont primrose-willow (Ludwigia arcuata) might just be the perfect addition. This charming southeastern native brings both ecological value and subtle elegance to water-loving landscapes, though its rarity makes it a plant that deserves special consideration.

What Makes Piedmont Primrose-Willow Special?

Piedmont primrose-willow is a perennial forb—basically a soft-stemmed flowering plant that comes back year after year. Unlike woody shrubs or trees, this herbaceous beauty stays relatively low and delicate, making it perfect for creating naturalistic wetland scenes without overwhelming other plants.

The plant produces small, cheerful yellow flowers with four petals that dance above narrow, alternate leaves. While it may not be the showiest plant in your garden, its understated charm and important ecological role more than make up for its modest appearance.

Where Does It Naturally Grow?

This southeastern native calls Alabama, Florida, Georgia, and South Carolina home. It’s perfectly adapted to the warm, humid conditions of the lower Southeast and thrives in the region’s wetland environments.

A Word of Caution: This Plant is Rare

Here’s something important to know before you start planning your piedmont primrose-willow patch: this plant is considered very rare, with an S1 status in Alabama. This means it’s critically imperiled in the state, making responsible sourcing absolutely essential.

If you decide to grow this plant, please only purchase from reputable native plant nurseries that can verify their stock comes from ethically propagated sources—never from wild-collected plants. Better yet, consider growing it from responsibly sourced seeds to help increase populations of this beautiful native.

Why Your Garden (and Local Wildlife) Will Love It

Piedmont primrose-willow isn’t just pretty—it’s a hardworking member of the ecosystem. As a native plant, it provides food and habitat for local wildlife that have evolved alongside it for thousands of years. The small yellow flowers attract native bees and other beneficial insects, making it a valuable addition to any pollinator-friendly landscape.

Since it’s classified as an obligate wetland plant, it almost always occurs in wetland environments in nature. This makes it incredibly valuable for:

  • Wetland restoration projects
  • Rain gardens and bioswales
  • Pond margins and water garden edges
  • Creating habitat for wetland wildlife

Growing Conditions: Think Wet and Wonderful

If you’re ready to give piedmont primrose-willow a try, here’s what it needs to thrive:

Light: Full sun to partial shade—it’s quite adaptable when it comes to lighting conditions.

Water: This is the big one! This plant absolutely must have consistently moist to wet soil. Think bog-like conditions or the edges of ponds and streams. If you don’t have naturally wet areas, you’ll need to create them through irrigation or by incorporating it into rain gardens.

Climate: Hardy in USDA zones 8-10, making it perfect for warm, humid southeastern gardens.

Soil: Adapts to various soil types as long as they stay consistently moist to wet.

Planting and Care Tips

Getting piedmont primrose-willow established requires attention to its water-loving nature:

  • Plant in spring after the last frost when soil temperatures are warming
  • Choose the wettest spot in your garden, or create one with consistent irrigation
  • Space plants according to nursery recommendations—they’ll spread naturally in ideal conditions
  • Mulch lightly around plants to help retain moisture
  • Monitor water levels closely, especially during dry spells
  • Allow plants to go dormant naturally in winter

Is This Plant Right for Your Garden?

Piedmont primrose-willow is perfect for gardeners who:

  • Have naturally wet areas or water features in their landscape
  • Are passionate about native plant conservation
  • Want to support local pollinators and wildlife
  • Enjoy the challenge of growing rare and special plants
  • Live in the southeastern United States (zones 8-10)

However, it might not be the best choice if you have a typical dry garden or can’t commit to providing consistent moisture.

The Bottom Line

Piedmont primrose-willow offers gardeners a unique opportunity to grow a rare native plant while contributing to conservation efforts. Its delicate beauty and important ecological role make it a worthwhile addition to wetland gardens, but its rarity means we all have a responsibility to source it ethically and grow it thoughtfully.

If you have the right wet conditions and can find responsibly sourced plants or seeds, piedmont primrose-willow will reward you with years of subtle beauty and the satisfaction of knowing you’re helping preserve a piece of our southeastern heritage. Just remember—when it comes to rare plants, every garden becomes a conservation opportunity!

Piedmont Primrose-willow

Classification

Group

Dicot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Magnoliopsida - Dicotyledons

Subclass

Rosidae

Order

Myrtales

Family

Onagraceae Juss. - Evening Primrose family

Genus

Ludwigia L. - primrose-willow

Species

Ludwigia arcuata Walter - piedmont primrose-willow

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