North America Native Plant

Woollyhead Clover

Botanical name: Trifolium eriocephalum

USDA symbol: TRER2

Life cycle: perennial

Habit: forb

Native status: Native to the lower 48 states  

Woollyhead Clover: A Charming Native Ground Cover for Western Gardens If you’re looking for a low-maintenance native plant that brings both charm and ecological value to your garden, woollyhead clover (Trifolium eriocephalum) might just be your new best friend. This delightful little perennial is one of those unsung heroes of ...

Woollyhead Clover: A Charming Native Ground Cover for Western Gardens

If you’re looking for a low-maintenance native plant that brings both charm and ecological value to your garden, woollyhead clover (Trifolium eriocephalum) might just be your new best friend. This delightful little perennial is one of those unsung heroes of the plant world – quietly beautiful, incredibly useful, and perfectly adapted to life in the American West.

What Makes Woollyhead Clover Special?

Woollyhead clover gets its endearing name from its distinctive flower heads, which look like tiny cotton balls dotting the landscape. These soft, rounded blooms are covered in fine, woolly hairs that give them their characteristic fuzzy appearance. The flowers typically range from white to pale pink, creating a subtle but lovely display throughout the growing season.

As a native forb (that’s a fancy way of saying a non-woody flowering plant), woollyhead clover is perfectly at home in western landscapes. Unlike some of its more aggressive clover cousins, this species has evolved specifically for the unique conditions found across the western United States.

Where Does Woollyhead Clover Call Home?

This hardy native has quite an impressive range, naturally occurring across seven western states: California, Idaho, Montana, Nevada, Oregon, Utah, and Washington. From coastal areas to mountain valleys, woollyhead clover has adapted to diverse environments throughout the region.

Why Your Garden (and Local Wildlife) Will Love It

There are plenty of reasons to consider adding woollyhead clover to your landscape:

  • Pollinator magnet: Like other clovers, this species attracts bees, butterflies, and other beneficial insects
  • Low maintenance: Once established, it’s quite drought tolerant and requires minimal care
  • Erosion control: Its spreading growth habit makes it excellent for stabilizing slopes
  • Native credentials: Supporting local ecosystems by choosing indigenous plants
  • Versatile water needs: Can handle both wetland and non-wetland conditions

Perfect Garden Situations for Woollyhead Clover

This adaptable plant shines in several garden settings:

  • Wildflower meadows: Adds texture and subtle color to naturalized areas
  • Native plant gardens: A perfect complement to other indigenous species
  • Xeriscape landscapes: Thrives in low-water garden designs
  • Ground cover applications: Fills in spaces between larger plants
  • Pollinator gardens: Provides nectar for beneficial insects

Growing Woollyhead Clover Successfully

The beauty of woollyhead clover lies in its adaptability and low-maintenance nature. Here’s what you need to know to grow it successfully:

Growing Conditions

  • Light: Full sun to partial shade
  • Soil: Adaptable to various soil types
  • Water: Drought tolerant once established; can handle both wet and dry conditions
  • Climate: Suitable for USDA hardiness zones 4-9

Planting and Care Tips

  • Plant in spring after the last frost or in fall before winter sets in
  • Water regularly during establishment, then reduce frequency as the plant matures
  • No need for fertilization – clovers actually fix nitrogen in the soil
  • May self-seed in favorable conditions, creating natural colonies
  • Very little pruning or maintenance required once established

A Few Things to Consider

While woollyhead clover is generally well-behaved, keep in mind that it may spread naturally through self-seeding. This isn’t necessarily a problem – many gardeners appreciate plants that can fill in gaps on their own – but it’s worth knowing if you prefer more controlled plantings.

Also, like many native plants, woollyhead clover may look quite different from the highly bred ornamentals you might be used to. Its beauty is more subtle and naturalistic, which makes it perfect for wildlife-friendly gardens but perhaps less suitable if you prefer formal, manicured landscapes.

The Bottom Line

Woollyhead clover offers western gardeners a wonderful opportunity to support local ecosystems while adding gentle beauty to their landscapes. Its drought tolerance, pollinator appeal, and low-maintenance nature make it an excellent choice for gardeners who want to work with nature rather than against it. Whether you’re creating a wildflower meadow, establishing a native plant garden, or simply looking for an easy-care ground cover, this charming little clover deserves a spot on your plant wish list.

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

FAC

Facultative - Plants with this status can occur in wetlands and non-wetlands

Western Mountains, Valleys, and Coast

FAC

Facultative - Plants with this status can occur in wetlands and non-wetlands

Woollyhead Clover

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

Trifolium L. - clover

Species

Trifolium eriocephalum Nutt. - woollyhead clover

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