North America Native Plant

Inyo Phacelia

Botanical name: Phacelia inyoensis

USDA symbol: PHIN4

Life cycle: annual

Habit: forb

Native status: Native to the lower 48 states  

Synonyms: Miltitzia inyoensis J.F. Macbr. (MIIN8)   

Inyo Phacelia: A Rare California Native Worth Protecting in Your Garden Meet the Inyo phacelia (Phacelia inyoensis), a delicate annual wildflower that’s as rare as it is beautiful. This little-known California native deserves a spot on every native plant enthusiast’s radar, though finding it might require some detective work. What ...

Rare plant alert!

Region: Conservation status by state

Status: S2: 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) ⚘

Inyo Phacelia: A Rare California Native Worth Protecting in Your Garden

Meet the Inyo phacelia (Phacelia inyoensis), a delicate annual wildflower that’s as rare as it is beautiful. This little-known California native deserves a spot on every native plant enthusiast’s radar, though finding it might require some detective work.

What Makes Inyo Phacelia Special

The Inyo phacelia is what botanists call a forb – essentially a soft-stemmed, non-woody flowering plant that completes its entire life cycle in just one growing season. Like its more famous phacelia cousins, this annual likely produces clusters of small, tubular flowers in shades of blue to purple, arranged in the characteristic coiled patterns that make phacelias so distinctive.

What truly sets this plant apart, however, is its rarity. With a conservation status of S2 (Imperiled), there are only an estimated 6 to 20 known populations of Inyo phacelia remaining in the wild, making it one of California’s botanical treasures.

Where Does It Call Home

True to its name, Inyo phacelia is endemic to California, specifically the Inyo region of the eastern Sierra Nevada. This specialized habitat preference means the plant has adapted to the unique conditions found in this dramatic landscape of high desert and mountain transitions.

Should You Grow Inyo Phacelia

Here’s where things get both exciting and serious. As a native California plant, Inyo phacelia would make a wonderful addition to native gardens, particularly those focused on rare or regionally specific species. However, its imperiled status means this isn’t a plant you can casually add to your shopping cart.

The responsible approach: Only consider growing Inyo phacelia if you can source seeds or plants from reputable native plant nurseries that propagate from legally and ethically collected material. Never collect from wild populations – every plant in the wild is precious for this species’ survival.

Growing Conditions and Care

While specific cultivation information for Inyo phacelia is limited due to its rarity, we can make educated guesses based on its native habitat and related species:

  • Climate zones: Likely suitable for USDA zones 8-10
  • Sun requirements: Probably prefers full sun to partial shade
  • Soil needs: Well-draining soils, possibly sandy or rocky
  • Water requirements: Low water once established, reflecting its high desert origins
  • Wetland tolerance: Facultative status means it can handle both wet and dry conditions

As an annual, Inyo phacelia will need to reseed itself or be replanted each year. The plant likely follows the typical pattern of germinating with fall or winter rains and blooming in spring.

Garden Design Ideas

If you’re lucky enough to obtain responsibly sourced Inyo phacelia, consider these design approaches:

  • Feature it in a California native plant collection
  • Include it in a rock garden that mimics its natural habitat
  • Use it as part of a conservation-focused display
  • Pair it with other drought-tolerant natives from similar elevations

Supporting Pollinators and Wildlife

While specific data on Inyo phacelia’s wildlife benefits isn’t well documented, most phacelias are excellent pollinator plants. The flowers likely attract native bees, butterflies, and other small pollinators that have co-evolved with California’s native flora.

The Conservation Connection

Growing Inyo phacelia responsibly isn’t just about having a unique plant in your garden – it’s about participating in conservation. By cultivating rare natives from ethical sources, gardeners can help maintain genetic diversity and potentially support future restoration efforts.

If you can’t find Inyo phacelia, consider growing other California native phacelias that are more readily available, such as tansy-leaf phacelia (Phacelia tanacetifolia) or caterpillar phacelia (Phacelia cicutaria). These alternatives will provide similar ecological benefits while being much easier to source responsibly.

A Plant Worth Waiting For

Inyo phacelia may not be the easiest native plant to grow, but for dedicated native gardeners interested in conservation, it represents something special – a chance to help preserve California’s botanical heritage right in your backyard. Just remember: patience, research, and responsible sourcing are key to growing this remarkable rare beauty successfully.

Inyo 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 inyoensis (J.F. Macbr.) J.T. Howell - Inyo phacelia

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