North America Native Plant

Seaside Bird’s-foot Trefoil

Botanical name: Lotus formosissimus

USDA symbol: LOFO2

Life cycle: perennial

Habit: forb

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

Synonyms: Hosackia gracilis Benth. (HOGR)   

Seaside Bird’s-Foot Trefoil: A Charming Native Ground Cover for Coastal Gardens If you’re looking for a delightful native ground cover that practically takes care of itself, let me introduce you to seaside bird’s-foot trefoil (Lotus formosissimus). This unassuming little perennial might not win any flashy flower contests, but it’s got ...

Seaside Bird’s-Foot Trefoil: A Charming Native Ground Cover for Coastal Gardens

If you’re looking for a delightful native ground cover that practically takes care of itself, let me introduce you to seaside bird’s-foot trefoil (Lotus formosissimus). This unassuming little perennial might not win any flashy flower contests, but it’s got charm in spades and some serious practical benefits that make it a winner in the right garden setting.

What Makes This Plant Special?

Seaside bird’s-foot trefoil is a true Pacific Coast native, naturally occurring from British Columbia down through California, with populations in Oregon and Washington as well. As a member of the legume family, this hardy forb brings that classic pea-family appeal with its cheerful yellow flowers and delicate compound leaves.

Don’t let the name fool you – while it’s called seaside, this adaptable plant can thrive in various garden settings, not just coastal areas. Its low-growing, spreading habit makes it an excellent choice for filling in spaces where grass struggles or where you want a more naturalistic look.

Garden Appeal and Design Role

This perennial forb creates a lovely carpet of small, bright yellow flowers that bloom in charming little clusters. The flowers have that distinctive pea-family shape that adds textural interest to any planting. While individual plants might seem modest, when allowed to spread and naturalize, seaside bird’s-foot trefoil creates a beautiful tapestry effect.

In garden design, this plant shines as:

  • Ground cover in native plant gardens
  • Filler in wildflower meadows
  • Erosion control on slopes
  • Low-maintenance option in coastal landscapes
  • Naturalistic alternative to traditional turf

Pollinator and Wildlife Benefits

Here’s where seaside bird’s-foot trefoil really earns its keep in the garden ecosystem. Those cheerful yellow blooms are magnets for native bees, butterflies, and other beneficial insects. As a legume, it also has the superpower of fixing nitrogen in the soil, actually improving growing conditions for neighboring plants.

Growing Conditions and Care

One of the best things about this native beauty is how easygoing it is. Seaside bird’s-foot trefoil thrives in USDA hardiness zones 8-10, making it perfect for mild coastal climates and similar conditions.

It prefers:

  • Full sun to partial shade
  • Well-drained soils (it’s quite tolerant of poor, sandy conditions)
  • Minimal water once established – this plant is impressively drought-tolerant
  • Areas classified as facultative wetland, meaning it can handle both wet and dry conditions

Planting and Maintenance Tips

Getting seaside bird’s-foot trefoil established is refreshingly simple. Once planted, it requires minimal fussing – this is definitely a plant it and forget it kind of native.

The plant can spread both by self-seeding and through underground growth, so give it room to naturalize if that’s the look you’re after. If you need to contain it, simply remove seedlings or trim back spreading growth.

Since it’s a facultative wetland plant, it can handle periodic flooding or very dry spells with equal grace, making it an excellent choice for areas with variable moisture conditions.

Is This Plant Right for Your Garden?

Seaside bird’s-foot trefoil is an excellent choice if you:

  • Want to support native ecosystems and local wildlife
  • Prefer low-maintenance plants that don’t need constant attention
  • Are gardening in challenging conditions like sandy soil or variable moisture
  • Appreciate subtle, naturalistic beauty over flashy displays
  • Want to add a nitrogen-fixing plant to improve your soil

However, it might not be the best fit if you’re looking for bold, showy blooms or need a plant that stays in very tight, controlled boundaries.

With its native status, ecological benefits, and easy-care nature, seaside bird’s-foot trefoil deserves consideration in any Pacific Coast garden. Sometimes the most valuable plants are the ones that quietly do their job while supporting the broader garden ecosystem – and this charming little native does exactly that.

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

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

Seaside Bird’s-foot Trefoil

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

Fabales

Family

Fabaceae Lindl. - Pea family

Genus

Lotus L. - trefoil

Species

Lotus formosissimus Greene - seaside bird's-foot trefoil

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