Native Plants

Keck’s Phacelia

Phacelia suaveolens keckii

USDA symbol: PHSUK

annual forb

Lower 48 states: native

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. This delicate California native belongs ...

Keck’s Phacelia may be listed as rare in your area.
Global Conservation Status

Status: S4T2 | Apparently Secure: Uncommon but not rare, and usually widespread. Possible 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.

  • Species observed
  • No observations

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.

Phacelia suaveolens keckii is also known as...

Often we refer to plants by their common names. When shopping for plants the scientific name is the best way to positively identify the plant species you desire. But some plants have more than one name! While it doesn't happen often, nurseries might display one name while you're searching for another. Phacelia suaveolens keckii is also known as:

Phacelia keckii Munz & | USDA symbol: PHKE2
Phacelia suaveolens Greene var. keckii | USDA symbol: PHSUK2

Why do some plants have more than one name? Over time plant species may be renamed for a few reasons:

  1. Botanists in different regions named the same plant without knowing it had already been classified.
  2. A species was reclassified after scientific advances in, for example, DNA analysis.
  3. Slight variations within a species are sometimes mistakenly identified as entirely new species.

Classification

Group: Dicot
Kingdom: Plantae - Plants
Subkingdom: Tracheobionta - Vascular plants
Superdivision: Spermatophyta - Seed plants
Division: Magnoliophyta - Flowering plants
Class: Magnoliopsida - Dicotyledons
Subclass: Asteridae
Order: Solanales
Family: Hydrophyllaceae R. Br. - Waterleaf family
Genus: Phacelia Juss. - phacelia

Species: Phacelia suaveolens Greene - sweetscented phacelia

Subspecies: Phacelia suaveolens Greene ssp. keckii (Munz & I.M. Johnst.) Thorne - Keck's phacelia

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