North America Native Plant

Sicklefruit Jewelflower

Botanical name: Streptanthus drepanoides

USDA symbol: STDR2

Life cycle: annual

Habit: forb

Native status: Native to the lower 48 states  

Sicklefruit Jewelflower: A Rare California Native Worth Protecting Meet the sicklefruit jewelflower (Streptanthus drepanoides), a delicate annual wildflower that’s as uncommon as its name suggests. This petite California native might not be the showiest plant in the garden, but it carries significant conservation value and offers a unique opportunity for ...

Rare plant alert!

Region: Conservation status by state

Status: S3: 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 ⚘

Sicklefruit Jewelflower: A Rare California Native Worth Protecting

Meet the sicklefruit jewelflower (Streptanthus drepanoides), a delicate annual wildflower that’s as uncommon as its name suggests. This petite California native might not be the showiest plant in the garden, but it carries significant conservation value and offers a unique opportunity for dedicated native plant enthusiasts to support local biodiversity.

A True California Original

The sicklefruit jewelflower is exclusively native to California, making it a true Golden State original. As a member of the mustard family, this annual forb represents the kind of specialized native flora that makes California’s plant communities so distinctive. Unlike many plants that have spread across multiple states, this little jewelflower has chosen to call only California home.

Why the Rare Label Matters

Here’s where things get serious: sicklefruit jewelflower has a Global Conservation Status of S3, which translates to Vulnerable. This means the species is at risk due to its limited range, small population size, or specific habitat requirements. With typically only 21 to 100 known occurrences and between 3,000 and 10,000 individual plants in existence, this isn’t a plant you’ll stumble across at your local nursery.

Important note for gardeners: If you’re interested in growing sicklefruit jewelflower, please ensure any seeds or plants come from responsibly sourced, legally obtained material. Never collect from wild populations, as this could harm already vulnerable communities.

What to Expect from This Modest Beauty

As an annual forb, sicklefruit jewelflower completes its entire life cycle in one growing season. Don’t expect towering heights or dramatic foliage – this is a herbaceous plant without woody stems, staying close to the ground with soft, green tissue. The sicklefruit part of its name likely refers to the curved shape of its seed pods, a charming detail that gives this plant its distinctive character.

Garden Role and Design Considerations

Sicklefruit jewelflower isn’t going to be the star of your typical suburban landscape, and that’s perfectly okay. This plant shines in:

  • Native plant gardens focused on conservation
  • Specialized wildflower meadows
  • Educational or demonstration gardens
  • Research or restoration projects

Think of it as the botanical equivalent of a rare book – valuable not for its flashy appearance, but for its unique story and conservation significance.

Growing Conditions and Care

While specific cultivation information for sicklefruit jewelflower is limited, we can draw from general knowledge about California native annuals and the jewelflower family:

  • Likely prefers well-draining soils typical of California’s Mediterranean climate
  • Probably benefits from fall or winter sowing to align with natural rainfall patterns
  • May require specific soil conditions or microclimates, given its rare status
  • As an annual, will need to reseed each year or allow for natural self-seeding

Supporting Pollinators and Wildlife

While specific wildlife benefits aren’t well-documented for this rare species, jewelflowers generally support native pollinators. Even small, inconspicuous wildflowers often provide crucial nectar sources for specialized native bees, butterflies, and other insects that larger, showier plants might not attract.

The Bottom Line for Gardeners

Sicklefruit jewelflower represents a unique opportunity for serious native plant enthusiasts who want to contribute to conservation efforts. This isn’t a beginner plant or one for casual gardeners looking for easy color and impact. Instead, it’s for those who understand that sometimes the most important plants are the quiet ones that need our help to survive.

If you’re drawn to rare plants and conservation gardening, sicklefruit jewelflower could be a meaningful addition to your native plant collection – just remember to source it responsibly and give it the specialized care that rare plants often require.

Sicklefruit Jewelflower

Classification

Group

Dicot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Magnoliopsida - Dicotyledons

Subclass

Dilleniidae

Order

Capparales

Family

Brassicaceae Burnett - Mustard family

Genus

Streptanthus Nutt. - twistflower

Species

Streptanthus drepanoides Kruckeb. & Morrison - sicklefruit jewelflower

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