North America Native Plant

Hughes’s Phacelia

Botanical name: Phacelia hughesii

USDA symbol: PHHU5

Life cycle: biennial

Habit: forb

Native status: Native to the lower 48 states  

Hughes’s Phacelia: A Critically Endangered Desert Gem You Should Know About (But Probably Can’t Grow) If you’re reading this hoping to add Hughes’s phacelia to your garden wishlist, I’ve got some news that might surprise you. This remarkable little desert wildflower is so rare that you’re more likely to spot ...

Rare plant alert!

Region: Conservation status by state

Status: S1: Status is uncertain but is somewhere between the following rankings: Critically Imperiled: Extremely rare due to factor(s) making it especially vulnerable to extinction. Typically 5 or fewer occurrences or very few remaining individuals (<1,000) ⚘

Hughes’s Phacelia: A Critically Endangered Desert Gem You Should Know About (But Probably Can’t Grow)

If you’re reading this hoping to add Hughes’s phacelia to your garden wishlist, I’ve got some news that might surprise you. This remarkable little desert wildflower is so rare that you’re more likely to spot a unicorn in your backyard than find this plant for sale at your local nursery. Let me tell you why this tiny Arizona native deserves our attention and protection.

What Makes Hughes’s Phacelia So Special?

Hughes’s phacelia (Phacelia hughesii) is a biennial forb – essentially a soft-stemmed, non-woody plant that completes its life cycle over two years. Like other members of the Phacelia family, it’s likely a pollinator magnet, though specific details about this particular species remain mysteriously scarce in the scientific literature.

This little plant calls Arizona home and nowhere else in the world. As a true Arizona native, it’s perfectly adapted to the unique conditions of the Sonoran Desert region.

The Reality Check: Why You Can’t (and Shouldn’t) Grow It

Here’s where things get serious, folks. Hughes’s phacelia carries a Global Conservation Status of S1, which translates to Critically Imperiled. What does that mean in plain English? This plant is hanging on by a thread, with typically five or fewer known locations and fewer than 1,000 individuals remaining in the wild.

This isn’t just rare – it’s what botanists call extremely vulnerable to extinction. So while your green thumb might be itching to add this unique Arizona native to your collection, the responsible thing to do is admire it from afar and support conservation efforts instead.

What We Know (And What We Don’t)

The frustrating truth about Hughes’s phacelia is that there’s remarkably little information available about its specific growing requirements, appearance, or ecological role. What we do know is:

  • It’s a biennial forb native exclusively to Arizona
  • As a member of the Phacelia genus, it likely produces attractive flowers that benefit pollinators
  • It’s adapted to desert conditions
  • Its population is critically small and vulnerable

Better Alternatives for Your Arizona Garden

If you’re drawn to the idea of growing Arizona native Phacelias, consider these more readily available and less endangered alternatives:

  • Desert Phacelia (Phacelia distans) – more common and equally beautiful
  • Scorpionweed (Phacelia crenulata) – stunning purple blooms
  • Wild Heliotrope (Phacelia crenulata var. ambigua) – great for pollinator gardens

These alternatives will give you the same desert charm and pollinator benefits without putting pressure on a critically endangered species.

How You Can Help

While you can’t grow Hughes’s phacelia in your garden, you can still make a difference:

  • Support organizations working on Arizona native plant conservation
  • Choose other native Arizona plants for your landscape
  • Spread awareness about the importance of protecting rare desert species
  • If you ever encounter this plant in the wild, report the sighting to local botanists or conservation groups

Sometimes the most loving thing we can do for a plant is to leave it be. Hughes’s phacelia reminds us that not every beautiful native plant belongs in our gardens – some belong in the wild, where we can work together to ensure they survive for future generations to discover and admire.

Hughes’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 hughesii N.D. Atwood - Hughes'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