North America Native Plant

Streambank Springbeauty

Botanical name: Claytonia parviflora grandiflora

USDA symbol: CLPAG4

Life cycle: annual

Habit: forb

Native status: Native to the lower 48 states  

Streambank Springbeauty: A Delicate California Native Worth Protecting Meet the streambank springbeauty (Claytonia parviflora grandiflora), a charming little annual that’s quietly making its mark in California’s native plant communities. This delicate forb might not be the showiest plant in your garden, but it carries significant conservation value and represents an ...

Rare plant alert!

Region: Conservation status by state

Status: S5T3: Status is uncertain but is somewhere between the following rankings: Subspecies or variety is 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. ⚘ Secure: At very low or no risk of extinction in the jurisdiction due to a very extensive range, abundant populations or occurrences, with little to no concern from declines or threats. ⚘

Streambank Springbeauty: A Delicate California Native Worth Protecting

Meet the streambank springbeauty (Claytonia parviflora grandiflora), a charming little annual that’s quietly making its mark in California’s native plant communities. This delicate forb might not be the showiest plant in your garden, but it carries significant conservation value and represents an important piece of California’s botanical heritage.

What Makes Streambank Springbeauty Special?

Streambank springbeauty is a native annual forb, meaning it’s an herbaceous plant that completes its entire life cycle in one growing season. As a member of the Claytonia genus, it belongs to the portulaca family and shares characteristics with other springbeauties that grace our landscapes with their simple, elegant flowers.

This California native has a Global Conservation Status of S5T3, which indicates it requires careful attention from conservation-minded gardeners. While not critically endangered, its status means we should be thoughtful about how and where we cultivate it.

Where Does It Call Home?

True to its name and nature, streambank springbeauty is found exclusively in California within the lower 48 states. This makes it a genuine Golden State endemic, perfectly adapted to the unique conditions found in California’s diverse ecosystems.

Why Consider Growing Streambank Springbeauty?

While this modest annual might not create dramatic garden displays, it offers several compelling reasons to include it in your native plant collection:

  • Conservation value: Growing rare native plants helps preserve genetic diversity and supports local ecosystems
  • Authentic California gardening: Few plants are more California than a species found nowhere else
  • Low maintenance: As an annual adapted to local conditions, it typically requires minimal intervention once established
  • Educational opportunity: Perfect for teaching about native plant conservation and California’s unique flora

Important Considerations Before Planting

Because of its conservation status, it’s crucial to source streambank springbeauty seeds or plants only from reputable native plant nurseries that practice responsible collection methods. Never collect seeds from wild populations, as this can harm already vulnerable communities.

Consider reaching out to local native plant societies or botanical gardens for guidance on appropriate sourcing and whether this species is suitable for your specific location within California.

Growing Your Streambank Springbeauty

As with many California natives, streambank springbeauty likely prefers conditions that mimic its natural habitat. While specific growing requirements for this subspecies aren’t well-documented, we can draw from general Claytonia growing principles:

  • Timing: Plant seeds in fall or early winter to allow for natural cold stratification
  • Location: Choose spots with good drainage, as most California natives dislike waterlogged conditions
  • Soil: Well-draining soils are typically preferred by springbeauties
  • Water: Moderate water during the growing season, with drier conditions as the plant matures

A Plant Worth Protecting

Streambank springbeauty represents the kind of quiet botanical treasure that makes California’s flora so special. While it may not grab attention like a showy poppy or dramatic oak, it plays its own important role in the state’s ecological tapestry.

By choosing to grow this rare native with responsibly sourced material, you’re not just adding a plant to your garden—you’re participating in conservation efforts and helping ensure that future generations can appreciate California’s complete botanical heritage.

Remember, the best native gardens are those that reflect and support local ecosystems while respecting the conservation needs of rare species. Streambank springbeauty offers the perfect opportunity to do both.

Streambank Springbeauty

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

Portulacaceae Dumort. - Purslane family

Genus

Claytonia L. - springbeauty

Species

Claytonia parviflora Douglas ex Hook. - streambank springbeauty

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