North America Native Plant

Santa Cruz Clover

Botanical name: Trifolium buckwestiorum

USDA symbol: TRBU3

Life cycle: annual

Habit: forb

Native status: Native to the lower 48 states  

Santa Cruz Clover: A Rare California Native Worth Protecting Meet the Santa Cruz clover (Trifolium buckwestiorum), one of California’s most endangered wildflowers. This little annual forb might not be destined for your backyard garden, but its story is absolutely fascinating and highlights the importance of protecting our rarest native plants. ...

Rare plant alert!

Region: Conservation status by state

Status: S2: Status is uncertain but is somewhere between the following rankings: Imperiled: Extremely rare due to factor(s) making it especially vulnerable to extinction. Typically 6 to 20 occurrences or few remaining individuals (1,000 to 3,000) ⚘

Santa Cruz Clover: A Rare California Native Worth Protecting

Meet the Santa Cruz clover (Trifolium buckwestiorum), one of California’s most endangered wildflowers. This little annual forb might not be destined for your backyard garden, but its story is absolutely fascinating and highlights the importance of protecting our rarest native plants.

What Makes Santa Cruz Clover So Special?

Santa Cruz clover is what botanists call an endemic species – meaning it exists nowhere else on Earth except in a tiny slice of coastal California. As an annual forb, it completes its entire life cycle in just one growing season, sprouting, flowering, setting seed, and dying back each year.

This diminutive member of the legume family shares DNA with the common clovers you might know, but it’s evolved to thrive in very specific coastal conditions that exist in only a handful of locations.

Where Does It Call Home?

You’ll find Santa Cruz clover exclusively in California, and even then, only in a precious few spots. Its entire world consists of small patches along the coast, making it one of the state’s most geographically restricted plants.

A Conservation Reality Check

Here’s where things get serious: Santa Cruz clover has a Global Conservation Status of S2, which translates to Imperiled. This means there are likely only 6 to 20 known populations left, with somewhere between 1,000 to 3,000 individual plants remaining in the wild. To put that in perspective, there are more giant pandas in the world than there are Santa Cruz clover plants!

Should You Grow Santa Cruz Clover?

The short answer? Probably not, and here’s why:

  • It’s extremely rare and needs protection in its natural habitat
  • Seeds or plants are not commercially available
  • It requires very specific coastal conditions that are difficult to replicate
  • Removing plants or seeds from wild populations could harm remaining populations

If you’re interested in supporting this species, consider donating to local conservation organizations working to protect coastal habitats instead.

Native Clover Alternatives for Your Garden

While you shouldn’t plant Santa Cruz clover, there are other beautiful native clovers that would love to call your garden home:

  • White-tip clover (Trifolium variegatum) – another California native with distinctive flowers
  • Bull clover (Trifolium fucatum) – a robust annual with showy blooms
  • Tomcat clover (Trifolium willdenovii) – perfect for wildflower meadows

How You Can Help

Even though you can’t grow Santa Cruz clover in your garden, you can still make a difference:

  • Support habitat conservation efforts in coastal California
  • Choose other native plants for your landscape
  • Learn about and share information about rare plants
  • Participate in citizen science projects that monitor rare species

Santa Cruz clover reminds us that not every native plant belongs in cultivation – sometimes the best way to love a plant is to let it be wild and work to protect the places it calls home. While we can’t invite this particular clover into our gardens, we can certainly invite its story into our hearts and use it to inspire better stewardship of all our native plants.

Santa Cruz 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 buckwestiorum Isely - Santa Cruz clover

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