North America Native Plant

Pseudostellaria

Botanical name: Pseudostellaria sierrae

USDA symbol: PSSI5

Life cycle: perennial

Habit: forb

Native status: Native to the lower 48 states  

Pseudostellaria: A Rare California Native Worth Knowing About If you’re drawn to unique native plants with a bit of mystery, Pseudostellaria sierrae might catch your attention. This little-known California native is one of those plants that botanists get excited about but gardeners rarely encounter—and there’s a good reason for that. ...

Rare plant alert!

Region: Conservation status by state

Status: S3S4: Status is uncertain but is somewhere between the following rankings: 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 ⚘ Apparently Secure: Uncommon but not rare, and usually widespread. Possibly cause for longterm concern. Typically more than 100 occurrences in the state or more than 10,000 individuals ⚘

Pseudostellaria: A Rare California Native Worth Knowing About

If you’re drawn to unique native plants with a bit of mystery, Pseudostellaria sierrae might catch your attention. This little-known California native is one of those plants that botanists get excited about but gardeners rarely encounter—and there’s a good reason for that.

What Is Pseudostellaria?

Pseudostellaria sierrae is a perennial forb, which is just a fancy way of saying it’s a soft-stemmed plant (not woody like a shrub) that comes back year after year. Think of it as an herbaceous wildflower that dies back in winter and emerges again in spring. As a member of the native plant community, it has been quietly doing its thing in California’s ecosystems long before any of us started thinking about native gardening.

Where Does It Call Home?

This plant is native to California and appears to be associated with the Sierra Nevada region, based on its scientific name sierrae. It’s one of those plants that has found its perfect niche in a specific geographic area and hasn’t felt the need to spread far beyond its preferred habitat.

The Rarity Factor: Why You Should Know But Probably Can’t Grow It

Here’s where things get interesting (and a bit cautionary). Pseudostellaria sierrae has a conservation status of S3S4, which indicates it may be uncommon to fairly common but still of conservation concern. This means it’s not exactly rare, but it’s not abundant either—it exists in that middle ground where we need to keep an eye on it.

For gardeners, this translates to an important message: if you’re lucky enough to encounter this plant or find it available through specialized native plant sources, make absolutely sure it’s been responsibly sourced. Never collect plants from wild populations, and only purchase from reputable nurseries that propagate their own stock.

What We Don’t Know (And Why That Matters)

One of the most honest things we can say about Pseudostellaria sierrae is that detailed horticultural information is quite limited. We don’t have extensive data on its specific growing conditions, pollinator relationships, or garden performance. This lack of information actually tells us something important: it’s likely a plant that thrives in very specific natural conditions that may be difficult to replicate in typical garden settings.

Should You Try to Grow It?

The short answer is: probably not, unless you’re an experienced native plant enthusiast with a deep understanding of California’s Sierra Nevada ecosystems. Here’s why:

  • Limited availability from responsible sources
  • Unclear growing requirements
  • Conservation status suggests it should remain in its natural habitat
  • May require very specific soil and climate conditions

Better Alternatives for Your Native Garden

Instead of trying to grow this rare species, consider these more readily available California natives that will give you similar benefits:

  • Other members of the pink family (Caryophaceae) that are better suited to cultivation
  • Common California wildflowers that support local ecosystems
  • Native perennial forbs that are widely available and well-documented

The Bigger Picture

Plants like Pseudostellaria sierrae remind us why native plant conservation matters. These species have evolved over thousands of years to fill specific ecological niches, and their rarity often reflects habitat loss or very specialized growing requirements. By learning about them—even if we can’t grow them—we become better stewards of our native plant communities.

If you’re passionate about supporting rare California natives, consider volunteering with local botanical societies, supporting habitat conservation efforts, or focusing your garden on more common native species that can help support the broader ecosystem these rare plants depend on.

The Takeaway

Pseudostellaria sierrae represents the fascinating diversity of California’s native flora and the importance of plant conservation. While it may not be the right choice for your garden, knowing about it helps us appreciate the complexity and beauty of our native plant communities. Sometimes the best way to love a plant is to let it thrive where it belongs—in the wild spaces it calls home.

Pseudostellaria

Classification

Group

Dicot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Magnoliopsida - Dicotyledons

Subclass

Caryophyllidae

Order

Caryophyllales

Family

Caryophyllaceae Juss. - Pink family

Genus

Pseudostellaria Pax - pseudostellaria

Species

Pseudostellaria sierrae Rabeler & R.L. Hartm. - pseudostellaria

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