North America Native Plant

Keck’s Phacelia

Botanical name: Phacelia suaveolens keckii

USDA symbol: PHSUK

Life cycle: annual

Habit: forb

Native status: Native to the lower 48 states  

Synonyms: Phacelia keckii Munz & I.M. Johnst. (PHKE2)  âš˜  Phacelia suaveolens Greene var. keckii (Munz & I.M. Johnst.) J.T. Howell (PHSUK2)   

Keck’s Phacelia: A Rare California Native Worth Knowing About Meet Keck’s phacelia (Phacelia suaveolens keckii), a charming little annual that calls California home. While you might not have heard of this particular native wildflower, it’s got quite the story to tell – and a few important considerations for gardeners who ...

Rare plant alert!

Region: Conservation status by state

Status: S4T2: Status is uncertain but is somewhere between the following rankings: Subspecies or variety is 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) ⚘ Apparently Secure: Uncommon but not rare, and usually widespread. Possibly cause for longterm concern. Typically more than 100 occurrences in the state or more than 10,000 individuals ⚘

Keck’s Phacelia: A Rare California Native Worth Knowing About

Meet Keck’s phacelia (Phacelia suaveolens keckii), a charming little annual that calls California home. While you might not have heard of this particular native wildflower, it’s got quite the story to tell – and a few important considerations for gardeners who want to grow responsibly.

What Makes Keck’s Phacelia Special?

This delicate California native belongs to the borage family and lives life as an annual forb – meaning it’s a non-woody plant that completes its entire life cycle in just one growing season. Like many of its Phacelia cousins, it likely produces clusters of small, bell-shaped flowers that are absolute magnets for pollinators.

Keck’s phacelia grows exclusively in California, making it a true Golden State original. Its scientific name honors David Daniels Keck, a renowned botanist who made significant contributions to our understanding of California’s flora.

A Word of Caution: Rarity Matters

Here’s where things get important for responsible gardeners. Keck’s phacelia has a Global Conservation Status of S4T2, which indicates it may be uncommon and potentially of conservation concern. This means if you’re interested in growing this native beauty, you’ll want to be extra thoughtful about where you source it.

Our recommendation? Only obtain seeds or plants from reputable native plant nurseries that practice ethical collection methods. Never collect seeds or plants from wild populations – this could harm already limited natural stands of this special plant.

Growing Keck’s Phacelia: What We Know

While specific growing information for Keck’s phacelia is limited, we can draw some educated conclusions based on its annual nature and California origins:

  • Climate: As a California native, it’s likely adapted to Mediterranean climate patterns with wet winters and dry summers
  • Soil: Probably thrives in well-draining soils, as many California natives prefer
  • Water: Likely drought-tolerant once established, following typical California native patterns
  • Sun exposure: Most Phacelia species prefer full sun to partial shade

Pollinator Paradise

While we don’t have specific data on Keck’s phacelia’s wildlife benefits, Phacelia species are generally beloved by bees, butterflies, and other pollinators. The flowers typically provide both nectar and pollen, making them valuable additions to pollinator gardens.

Garden Design Ideas

If you’re fortunate enough to source this rare native responsibly, consider these placement ideas:

  • Native plant gardens celebrating California flora
  • Pollinator gardens alongside other native annuals
  • Naturalistic landscapes that mimic California’s native plant communities
  • Seed mixes for wildflower meadows (if appropriate for your region)

The Bottom Line

Keck’s phacelia represents something special – a piece of California’s unique botanical heritage that deserves our respect and protection. While it might be tempting to seek out rare plants for our gardens, remember that conservation comes first. If you do choose to grow this lovely native, make sure you’re supporting its preservation through ethical sourcing.

For most gardeners, exploring other more common Phacelia species might be a better starting point. Consider Phacelia campanularia (California bluebell) or Phacelia tanacetifolia (lacy phacelia) as alternatives that offer similar pollinator benefits without the conservation concerns.

Sometimes the most beautiful garden choices are the ones that help protect our native plant heritage for future generations to enjoy.

Keck’s Phacelia

Classification

Group

Dicot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Magnoliopsida - Dicotyledons

Subclass

Asteridae

Order

Solanales

Family

Hydrophyllaceae R. Br. - Waterleaf family

Genus

Phacelia Juss. - phacelia

Species

Phacelia suaveolens Greene - sweetscented phacelia

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