North America Native Plant

Big Bear Valley Phlox

Botanical name: Phlox dolichantha

USDA symbol: PHDO2

Life cycle: perennial

Habit: subshrub

Native status: Native to the lower 48 states  

Big Bear Valley Phlox: A Rare Mountain Gem Worth Protecting Meet the Big Bear Valley phlox (Phlox dolichantha), a botanical treasure that’s as elusive as it is beautiful. This native California perennial represents one of nature’s most exclusive garden guests – so rare that finding it feels like discovering a ...

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) ⚘

Big Bear Valley Phlox: A Rare Mountain Gem Worth Protecting

Meet the Big Bear Valley phlox (Phlox dolichantha), a botanical treasure that’s as elusive as it is beautiful. This native California perennial represents one of nature’s most exclusive garden guests – so rare that finding it feels like discovering a hidden jewel in the mountains.

What Makes Big Bear Valley Phlox Special?

This charming perennial herb belongs to the beloved phlox family, known for their cheerful flowers and garden-friendly nature. As a forb, Big Bear Valley phlox grows as a non-woody plant that returns year after year, adding subtle beauty to its mountain home without the bulk of shrubs or trees.

What sets this phlox apart isn’t just its lovely blooms – it’s the fact that you’re unlikely to encounter it anywhere else on Earth. This species calls only California home, making it a true Golden State original.

Where Does It Grow?

Big Bear Valley phlox has perhaps the most exclusive address in the plant kingdom – it’s found only in California, with its name giving away its preferred neighborhood: the Big Bear Valley region of the San Bernardino Mountains.

A Plant on the Edge: Understanding Its Rarity

Here’s where things get serious. Big Bear Valley phlox carries a Global Conservation Status of S2, which means it’s considered Imperiled. In plant conservation terms, this translates to somewhere between 6 to 20 known occurrences in the wild, with only 1,000 to 3,000 individual plants estimated to exist.

This rarity status puts our mountain phlox in a precarious position – it’s vulnerable to extinction and needs our protection more than our gardens need its beauty.

Should You Grow Big Bear Valley Phlox?

The short answer is: proceed with extreme caution and responsibility. While supporting native plants is always admirable, Big Bear Valley phlox presents a unique ethical dilemma for gardeners.

The case for growing it:

  • It’s a California native, supporting local ecosystems
  • Perennial nature means long-term garden value
  • Part of the diverse phlox family known for attracting pollinators
  • Helps preserve genetic diversity through cultivation

The case for caution:

  • Extremely limited wild populations
  • Risk of contributing to habitat pressure if not ethically sourced
  • Limited availability of responsibly propagated specimens
  • Better alternatives exist for most garden situations

If You Choose to Grow It: Responsible Sourcing is Everything

Should you decide to include Big Bear Valley phlox in your garden, the source matters more than anything else. Only consider plants that are:

  • Propagated from legally and ethically collected seeds
  • Grown by reputable native plant nurseries
  • Never wild-collected or of questionable origin
  • Part of legitimate conservation efforts

Never attempt to collect this plant from the wild – doing so could push local populations closer to extinction.

Growing Conditions and Care

Given its mountain origins, Big Bear Valley phlox likely prefers conditions that mirror its native habitat. While specific cultivation information is limited due to its rarity, you can infer it probably enjoys:

  • Well-draining soil typical of mountain environments
  • Cooler temperatures matching its high-elevation home
  • USDA hardiness zones that correspond to the San Bernardino Mountains
  • Possibly some protection from intense afternoon sun

Consider These Alternatives

For most gardeners, other California native phlox species or similar plants offer better choices that don’t carry conservation concerns. Look for more common native alternatives that provide similar aesthetic appeal without the ethical complexity.

The Bottom Line

Big Bear Valley phlox represents both the wonder and responsibility that comes with native gardening. While it’s a beautiful piece of California’s natural heritage, its rarity demands that we think carefully before bringing it into our gardens.

If you’re passionate about this particular species, consider supporting conservation efforts in its native habitat instead of – or in addition to – growing it. Sometimes the greatest act of garden love is knowing when to admire from afar and protect what remains in the wild.

Remember: every rare plant in cultivation should represent hope for conservation, not pressure on wild populations. Choose wisely, source responsibly, and help ensure that future generations can discover the magic of Big Bear Valley phlox in its mountain home.

Big Bear Valley Phlox

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

Polemoniaceae Juss. - Phlox family

Genus

Phlox L. - phlox

Species

Phlox dolichantha A. Gray - Big Bear Valley phlox

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