North America Native Plant

Pringle’s Phacelia

Botanical name: Phacelia pringlei

USDA symbol: PHPR

Life cycle: annual

Habit: forb

Native status: Native to the lower 48 states  

Pringle’s Phacelia: A Mysterious California Native Worth Knowing Meet Pringle’s phacelia (Phacelia pringlei), one of California’s more enigmatic native wildflowers. This annual forb might not be the showiest plant in your garden center, but it carries the quiet charm of a true California original – and a bit of botanical ...

Rare plant alert!

Region: Conservation status by state

Status: S3?: Status is uncertain but is somewhere between the following rankings: Inexact rank: ⚘ 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 ⚘

Pringle’s Phacelia: A Mysterious California Native Worth Knowing

Meet Pringle’s phacelia (Phacelia pringlei), one of California’s more enigmatic native wildflowers. This annual forb might not be the showiest plant in your garden center, but it carries the quiet charm of a true California original – and a bit of botanical mystery to boot.

What Makes Pringle’s Phacelia Special?

As a native California annual, Pringle’s phacelia belongs to the diverse Phacelia genus, known for their often fuzzy leaves and clusters of small, delicate flowers. This particular species is what botanists call a forb – essentially a soft-stemmed flowering plant that lacks woody tissue. Think of it as nature’s way of creating temporary beauty that completes its entire life cycle in just one growing season.

What’s particularly intriguing about Pringle’s phacelia is its somewhat mysterious status in the plant world. With a conservation ranking of S3? (the question mark indicating undefined status), this species sits in that fascinating gray area where botanists are still figuring out exactly how rare or common it might be.

Where You’ll Find It

Pringle’s phacelia calls California home, though specific details about its exact range within the Golden State remain somewhat elusive. Like many of California’s native annuals, it’s likely adapted to the state’s Mediterranean climate patterns.

Should You Grow Pringle’s Phacelia?

Here’s where things get interesting – and a bit cautious. While this native beauty would theoretically make a lovely addition to a California native plant garden, its uncertain conservation status means we need to tread carefully.

The Pros:

  • True California native with deep local roots
  • Annual growth habit means it won’t take over your garden permanently
  • Part of the ecologically important Phacelia family
  • Supports authentic regional biodiversity

The Considerations:

  • Limited availability due to uncertain conservation status
  • Specific growing requirements not well documented
  • May require specialized care or conditions

If You Choose to Grow It

Should you decide to include Pringle’s phacelia in your native garden, the golden rule is responsible sourcing. Only obtain seeds or plants from reputable native plant nurseries that can verify their material comes from ethical, sustainable sources – never from wild collection.

As an annual, you can expect this plant to complete its full life cycle in one growing season. Like most California natives, it’s likely adapted to the state’s dry summers and wet winters, though specific care requirements remain somewhat mysterious.

Growing Tips (Based on General Phacelia Characteristics)

While specific information about Pringle’s phacelia is limited, most California Phacelia species share some common preferences:

  • Well-draining soil (essential for most California natives)
  • Full to partial sun exposure
  • Minimal summer water once established
  • Fall or early spring sowing for annual varieties

The Bottom Line

Pringle’s phacelia represents one of those wonderful botanical puzzles that make native gardening so fascinating. While we may not know everything about this California native, its very existence reminds us of the incredible diversity hiding in our local ecosystems.

If you’re building a collection of rare California natives and can source it responsibly, Pringle’s phacelia could be a unique addition to your garden. Just remember – with uncertain conservation status comes the responsibility to be extra thoughtful about how we grow and share these botanical treasures.

Sometimes the most rewarding native plants are the ones that keep a few secrets, reminding us that there’s always more to discover in the wonderful world of California’s native flora.

Pringle’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 pringlei A. Gray - Pringle'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