North America Native Plant

Blakley’s Spineflower

Botanical name: Chorizanthe blakleyi

USDA symbol: CHBL

Life cycle: annual

Habit: forb

Native status: Native to the lower 48 states  

Blakley’s Spineflower: A Rare California Native Worth Protecting If you’re passionate about native California plants and conservation, you might want to learn about Blakley’s spineflower (Chorizanthe blakleyi). This little-known annual is a true California endemic that deserves our attention – not just for its ecological value, but because it’s becoming ...

Rare plant alert!

Region: Conservation status by state

Status: S2S3: 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) ⚘ Vulnerable: Either very rare and local throughout its range, found only in a restricted range (even if abundant at some locations), or factors are making it vulnerable to extinction. Typically 21 to 100 occurrences or between 3,000 and 10,000 individuals ⚘

Blakley’s Spineflower: A Rare California Native Worth Protecting

If you’re passionate about native California plants and conservation, you might want to learn about Blakley’s spineflower (Chorizanthe blakleyi). This little-known annual is a true California endemic that deserves our attention – not just for its ecological value, but because it’s becoming increasingly rare in the wild.

What Makes Blakley’s Spineflower Special?

Blakley’s spineflower is an annual forb, meaning it’s a herbaceous plant that completes its entire life cycle in one year. Unlike woody shrubs or perennial flowers, this petite native starts from seed each spring, blooms, sets seed, and dies back before winter. It’s part of the buckwheat family and produces small clusters of tiny white to pinkish flowers that may not win any beauty contests, but serve an important role in California’s native ecosystems.

Where Does It Come From?

This special little plant is endemic to California, meaning it naturally occurs nowhere else on Earth. You’ll find it primarily in the Central Valley and surrounding foothills, where it has adapted to the state’s Mediterranean climate and unique soil conditions.

A Word of Caution: Rarity Matters

Here’s something important every gardener should know: Blakley’s spineflower has a Global Conservation Status of S2S3, which means it’s considered imperiled to vulnerable. In plain terms, this plant is becoming rare in the wild due to habitat loss and other environmental pressures. If you’re considering growing it, please only use seeds or plants from reputable native plant nurseries that source their material responsibly – never collect from wild populations.

Should You Grow Blakley’s Spineflower?

This isn’t your typical garden showstopper, but there are compelling reasons why conservation-minded gardeners might want to include it in their landscapes:

  • It’s a true California native with deep local roots
  • Supports native pollinators and beneficial insects
  • Requires minimal water once established
  • Perfect for naturalized areas and restoration projects
  • Helps preserve genetic diversity of rare native species

However, this plant isn’t for everyone. Its small, inconspicuous flowers won’t provide the dramatic color of more popular natives, and its annual nature means it won’t give you permanent structure in the landscape.

Growing Conditions and Care

If you decide to grow Blakley’s spineflower, you’ll want to mimic its natural habitat. This plant thrives in:

  • Full sun locations
  • Well-draining, sandy or gravelly soils
  • Areas with minimal summer water
  • USDA hardiness zones 8-10

The best approach is direct seeding in fall, allowing winter rains to naturally germinate the seeds. Once established, these plants are quite drought-tolerant and actually prefer dry conditions during their growing season.

A Plant for Conservation Gardens

Blakley’s spineflower works best in specialized garden settings like native plant gardens, restoration areas, or naturalized landscapes where its subtle beauty can be appreciated alongside other California natives. It’s not ideal for formal flower beds or high-traffic areas where its small stature might get lost.

The Bottom Line

While Blakley’s spineflower might not be the flashiest addition to your garden, it offers something more valuable: a chance to participate in conservation right in your own backyard. By growing this rare native responsibly, you’re helping preserve a piece of California’s natural heritage while supporting the tiny but important pollinators that depend on plants like this.

Just remember: if you choose to grow this special plant, always source it responsibly from reputable native plant suppliers. Every seed matters when it comes to rare species conservation.

Blakley’s Spineflower

Classification

Group

Dicot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Magnoliopsida - Dicotyledons

Subclass

Caryophyllidae

Order

Polygonales

Family

Polygonaceae Juss. - Buckwheat family

Genus

Chorizanthe R. Br. ex Benth. - spineflower

Species

Chorizanthe blakleyi Hardham - Blakley's spineflower

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