North America Native Plant

Hairy Wild Cabbage

Botanical name: Caulanthus pilosus

USDA symbol: CAPI4

Life cycle: biennial

Habit: forb

Native status: Native to the lower 48 states  

Synonyms: Streptanthus pilosus (S. Watson) Jeps. (STPI5)   

Hairy Wild Cabbage: A Humble Native with Surprising Garden Potential Meet hairy wild cabbage (Caulanthus pilosus), a modest native wildflower that might not win any beauty contests but deserves a second look from gardeners interested in supporting local ecosystems. This unassuming member of the mustard family brings authentic western charm ...

Hairy Wild Cabbage: A Humble Native with Surprising Garden Potential

Meet hairy wild cabbage (Caulanthus pilosus), a modest native wildflower that might not win any beauty contests but deserves a second look from gardeners interested in supporting local ecosystems. This unassuming member of the mustard family brings authentic western charm to gardens while requiring virtually no pampering—a combination that’s hard to beat in today’s water-conscious gardening world.

What Exactly Is Hairy Wild Cabbage?

Don’t let the name fool you—this isn’t the cabbage you’ll find in your salad bowl! Hairy wild cabbage is a native wildflower that can live as an annual, biennial, or perennial, depending on growing conditions. As a forb (a non-woody flowering plant), it produces small clusters of white to pale yellow flowers and gets its hairy moniker from the fine hairs covering its stems and leaves. You might also encounter it listed under its former scientific name, Streptanthus pilosus.

Where Does It Call Home?

This hardy native has made itself comfortable across five western states: California, Idaho, Nevada, Oregon, and Utah. It’s perfectly adapted to the challenging conditions of the American West, from desert edges to mountain foothills.

Should You Plant Hairy Wild Cabbage?

Here’s the honest truth: hairy wild cabbage won’t stop traffic with its stunning blooms or create Instagram-worthy garden moments. However, there are several compelling reasons why native plant enthusiasts and eco-conscious gardeners might want to give it a try:

  • Ultra-low maintenance: Once established, this plant practically takes care of itself
  • Drought tolerant: Perfect for water-wise gardening and xeriscaping
  • Pollinator support: Small native bees and other pollinators appreciate the modest flowers
  • Authentic native character: Adds genuine regional flavor to wildflower gardens
  • Ecological value: Supports local wildlife as part of natural plant communities

Best Garden Settings

Hairy wild cabbage shines in specific garden contexts rather than formal flower borders:

  • Native plant gardens and natural landscaping
  • Wildflower meadows and prairie-style plantings
  • Xeriscaping and drought-tolerant landscapes
  • Restoration projects and habitat gardens
  • Informal cottage garden edges

Growing Conditions and Care

One of the best things about hairy wild cabbage is how easy-going it is about growing conditions. This adaptable native thrives in:

  • Soil: Well-drained soils, including poor or rocky ground
  • Sun exposure: Full sun for best performance
  • Water needs: Drought tolerant once established; minimal supplemental watering needed
  • Climate zones: Hardy in USDA zones 4-9

Planting and Care Tips

Growing hairy wild cabbage is refreshingly straightforward:

  • Seeding: Direct sow seeds in fall or early spring for best germination
  • Spacing: Allow plants room to spread naturally
  • Watering: Water gently until established, then rely on natural rainfall
  • Maintenance: Minimal care required; may self-seed in favorable conditions
  • Fertilizing: Usually unnecessary—this plant prefers lean soils

The Bottom Line

Hairy wild cabbage might not be the showstopper of your garden, but it’s the reliable, low-maintenance friend who’s always there when you need them. If you’re creating a native plant garden, working on ecological restoration, or simply want to support local pollinators with minimal effort, this humble wildflower deserves consideration. Just remember to source seeds or plants responsibly from reputable native plant suppliers to ensure you’re getting true local genetics.

Sometimes the most valuable garden plants are the ones that work quietly behind the scenes, supporting the local ecosystem while asking for almost nothing in return. In a world of high-maintenance garden divas, there’s something refreshingly honest about a plant that simply does its job without fanfare.

Hairy Wild Cabbage

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

Caulanthus S. Watson - wild cabbage

Species

Caulanthus pilosus S. Watson - hairy wild cabbage

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