North America Native Plant

Desert Winged Rockcress

Botanical name: Sibara deserti

USDA symbol: SIDE

Life cycle: annual

Habit: forb

Native status: Native to the lower 48 states  

Synonyms: Arabis deserti (M.E. Jones) Abrams (ARDE7)  âš˜  Thelypodium deserti M.E. Jones (THDE6)   

Desert Winged Rockcress: A Rare Gem for Desert Gardens If you’re looking to add something truly special to your desert garden, desert winged rockcress (Sibara deserti) might just be the hidden treasure you’ve been searching for. This delicate annual wildflower brings a touch of ephemeral beauty to the harsh desert ...

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 ⚘

Desert Winged Rockcress: A Rare Gem for Desert Gardens

If you’re looking to add something truly special to your desert garden, desert winged rockcress (Sibara deserti) might just be the hidden treasure you’ve been searching for. This delicate annual wildflower brings a touch of ephemeral beauty to the harsh desert landscape, but there’s more to this little plant than meets the eye.

What Makes Desert Winged Rockcress Special?

Desert winged rockcress is a native annual forb that calls the Mojave and Sonoran deserts home. You’ll find this charming wildflower naturally growing in California and Nevada, where it has adapted perfectly to life in some of North America’s most challenging environments. As a member of the mustard family, it produces clusters of small, delicate white flowers with four petals that seem to dance above narrow, slender leaves.

A Plant Worth Protecting

Here’s where things get important: desert winged rockcress has a Global Conservation Status of S3, meaning it’s considered vulnerable. With only 21 to 100 known occurrences and between 3,000 to 10,000 individuals estimated in the wild, this little beauty is quite rare. If you’re considering adding it to your garden, please make sure you source seeds or plants responsibly from reputable native plant nurseries that don’t collect from wild populations.

Garden Appeal and Design Role

Don’t expect this plant to be a showstopper in the traditional sense. Desert winged rockcress offers subtle charm rather than bold drama. Its delicate white flowers and fine-textured foliage make it perfect for:

  • Desert and xeric gardens
  • Rock gardens with excellent drainage
  • Native plant collections
  • Educational gardens focused on rare desert flora
  • Naturalized areas that mimic desert washes

Growing Conditions and Care

As you might expect from a desert native, desert winged rockcress has some specific needs. It thrives in USDA hardiness zones 8-10, particularly in areas that experience true desert conditions. Here’s what this little survivor prefers:

  • Soil: Sandy, extremely well-draining desert soils
  • Sun: Full sun exposure
  • Water: Minimal water once established; relies mainly on winter rains
  • Climate: Hot, dry summers with cool winters

Planting and Propagation Tips

Since desert winged rockcress is an annual, you’ll need to start fresh each year. The best approach is direct seeding in fall, as the seeds require winter chill to germinate properly. Scatter seeds in areas with excellent drainage and resist the urge to water regularly – this desert dweller actually prefers to tough it out on its own once established.

Benefits for Wildlife and Pollinators

While small, the flowers of desert winged rockcress do their part in supporting desert ecosystems. The blooms attract small native bees and other beneficial insects that are crucial pollinators in desert environments. Every little flower counts in these harsh landscapes!

Should You Grow Desert Winged Rockcress?

This plant isn’t for everyone, and that’s perfectly okay. Consider desert winged rockcress if you:

  • Live in desert regions of California or Nevada
  • Have a passion for rare native plants
  • Want to support desert conservation efforts
  • Enjoy subtle, naturalistic garden beauty
  • Can source plants or seeds responsibly

Remember, with its vulnerable status, growing desert winged rockcress is as much about conservation as it is about gardening. By cultivating this rare beauty responsibly, you’re helping ensure that future generations can enjoy this delicate desert gem. Just make sure you’re getting your plants or seeds from reputable sources that don’t impact wild populations – this little survivor needs all the help it can get!

Desert Winged Rockcress

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

Sibara Greene - winged rockcress

Species

Sibara deserti (M.E. Jones) Rollins - desert winged rockcress

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