North America Native Plant

Sierra Suncup

Botanical name: Camissonia sierrae sierrae

USDA symbol: CASIS2

Life cycle: annual

Habit: forb

Native status: Native to the lower 48 states  

Sierra Suncup: A Rare California Native Worth Knowing If you’re passionate about native California gardening and love discovering hidden gems, let me introduce you to Sierra suncup (Camissonia sierrae sierrae). This charming annual forb might not be the showiest plant in your garden, but it represents something special – a ...

Rare plant alert!

Region: Conservation status by state

Status: S3T3: 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 ⚘ 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. ⚘

Sierra Suncup: A Rare California Native Worth Knowing

If you’re passionate about native California gardening and love discovering hidden gems, let me introduce you to Sierra suncup (Camissonia sierrae sierrae). This charming annual forb might not be the showiest plant in your garden, but it represents something special – a piece of California’s unique botanical heritage that deserves our attention and protection.

What Makes Sierra Suncup Special?

Sierra suncup is a true California native, found exclusively within the Golden State. As an annual forb, this herbaceous plant completes its entire life cycle in a single growing season, making it a perfect example of nature’s efficiency. Unlike woody shrubs or trees, Sierra suncup lacks significant woody tissue and instead puts its energy into flowers and seeds before the season ends.

Where Does It Grow?

This native beauty calls California home, though its exact range within the state appears to be quite limited. Like many of California’s endemic plants, Sierra suncup has adapted to specific local conditions that make it perfectly suited to its particular corner of the world.

A Word About Rarity

Here’s something important to know: Sierra suncup has a conservation status of S3T3, which indicates it may be uncommon or have limited distribution. This means if you’re interested in growing this native plant, it’s crucial to source seeds or plants only from reputable native plant societies or nurseries that practice ethical collection methods. Never collect from wild populations – let’s keep this special plant thriving where nature intended.

Growing Sierra Suncup: What We Know

Since Sierra suncup is quite rare in cultivation, specific growing information is limited. However, based on its classification as a California native annual forb, here’s what we can reasonably expect:

  • As an annual, it will need to be replanted each year or allowed to self-seed
  • Being a California native, it’s likely adapted to the state’s Mediterranean climate patterns
  • Like most native annuals, it probably prefers well-draining soil
  • It may be drought-tolerant once established, following typical California native plant patterns

Is Sierra Suncup Right for Your Garden?

This plant might be perfect for you if:

  • You’re creating a specialized native California garden
  • You enjoy supporting rare and uncommon plants
  • You appreciate the ephemeral beauty of annual wildflowers
  • You want to contribute to native plant conservation

However, Sierra suncup might not be the best choice if you’re looking for a reliable garden workhorse or dramatic landscape focal point. Its rarity means it’s more of a conservation project than a typical garden plant.

The Bottom Line

Sierra suncup represents the kind of botanical treasure that makes California’s flora so remarkable. While we don’t have extensive cultivation information for this rare native, its very existence reminds us of the incredible diversity hidden in California’s landscapes. If you’re lucky enough to find ethically sourced seeds or plants, consider giving this little native a spot in your garden – you’ll be participating in something much bigger than gardening. You’ll be helping preserve a piece of California’s natural heritage.

Remember, when it comes to rare natives like Sierra suncup, every garden that grows them responsibly is a small victory for conservation. Sometimes the most meaningful plants in our gardens aren’t the showiest ones – they’re the ones that connect us to the irreplaceable natural world right outside our doors.

Sierra Suncup

Classification

Group

Dicot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Magnoliopsida - Dicotyledons

Subclass

Rosidae

Order

Myrtales

Family

Onagraceae Juss. - Evening Primrose family

Genus

Camissonia Link - suncup

Species

Camissonia sierrae P.H. Raven - Sierra suncup

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