North America Native Plant

Idaho Phacelia

Botanical name: Phacelia idahoensis

USDA symbol: PHID

Life cycle: perennial

Habit: forb

Native status: Native to the lower 48 states  

Idaho Phacelia: A Mysterious Native Wildflower Worth Understanding If you’ve stumbled across the name Idaho phacelia (Phacelia idahoensis), you’ve discovered one of the more enigmatic members of the borage family. This native perennial forb represents the kind of botanical mystery that makes native plant gardening both exciting and challenging. What ...

Idaho Phacelia: A Mysterious Native Wildflower Worth Understanding

If you’ve stumbled across the name Idaho phacelia (Phacelia idahoensis), you’ve discovered one of the more enigmatic members of the borage family. This native perennial forb represents the kind of botanical mystery that makes native plant gardening both exciting and challenging.

What Makes Idaho Phacelia Special?

Idaho phacelia is a perennial forb, which means it’s an herbaceous flowering plant that lacks woody stems and comes back year after year. Like other members of the Phacelia genus, it belongs to the borage family and shares the characteristic of being a vascular plant without significant woody tissue above ground level.

Where Does It Call Home?

This native wildflower is documented as occurring in Idaho, living up to its common name. As a plant species native to the lower 48 states, it represents the kind of regional endemic that makes local flora so special and worth preserving.

A Word of Caution for Gardeners

Here’s where things get interesting (and a bit mysterious): Idaho phacelia appears to be extremely rare or possibly represents a very localized population. This presents both an opportunity and a responsibility for native plant enthusiasts.

If you’re considering growing this plant, it’s crucial to:

  • Source seeds or plants only from reputable native plant nurseries
  • Ensure any material is ethically and sustainably collected
  • Never collect from wild populations
  • Consider this plant only if you’re in its native range

Growing Considerations

Given the limited information available about Idaho phacelia’s specific growing requirements, gardeners interested in this plant should approach cultivation with care. As a perennial forb native to Idaho, it likely prefers conditions similar to other high-elevation or semi-arid Phacelia species.

Without specific growing data, it’s wise to:

  • Provide well-draining soil
  • Consider the plant’s natural Idaho habitat when selecting planting locations
  • Start small with any cultivation attempts
  • Monitor the plant carefully to understand its preferences

Alternative Phacelia Options

If you’re drawn to the Phacelia genus but concerned about the rarity and limited availability of Idaho phacelia, consider these more common and well-documented alternatives:

  • Silky phacelia (Phacelia sericea) – stunning purple-blue flowers
  • Silverleaf phacelia (Phacelia hastata) – excellent for pollinators
  • Threadleaf phacelia (Phacelia linearis) – delicate, thread-like foliage

The Bottom Line

Idaho phacelia represents the fascinating complexity of native plant diversity. While its rarity makes it an intriguing addition for serious native plant collectors, most gardeners will find greater success and ecological impact with better-documented Phacelia species. If you do encounter this plant or seeds from reputable sources, treat it as the botanical treasure it appears to be – rare, special, and deserving of our most careful attention.

Remember, the best native garden is one that supports local ecosystems while respecting the delicate balance of rare and common species alike.

Idaho 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 idahoensis L.F. Hend. - Idaho phacelia

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