North America Native Plant

Sierra Ragwort

Botanical name: Senecio scorzonella

USDA symbol: SESC

Life cycle: perennial

Habit: forb

Native status: Native to the lower 48 states  

Synonyms: Senecio covillei Greene (SECO13)  âš˜  Senecio covillei Greene var. scorzonella (Greene) Jeps. (SECOS)   

Sierra Ragwort: A Charming Native Wildflower for Western Gardens If you’re looking to add a splash of sunny yellow to your native plant garden, Sierra ragwort might just be the perfect candidate. This delightful little wildflower brings the charm of the Sierra Nevada mountains right to your backyard, and it’s ...

Sierra Ragwort: A Charming Native Wildflower for Western Gardens

If you’re looking to add a splash of sunny yellow to your native plant garden, Sierra ragwort might just be the perfect candidate. This delightful little wildflower brings the charm of the Sierra Nevada mountains right to your backyard, and it’s surprisingly easy to grow once you understand its simple needs.

What is Sierra Ragwort?

Sierra ragwort (Senecio scorzonella) is a native perennial forb that calls the western United States home. As a member of the sunflower family, it produces cheerful yellow daisy-like blooms that are sure to brighten up any garden space. This hardy little plant has been quietly decorating mountain meadows and slopes for countless years, and now it’s ready to do the same for your landscape.

You might also encounter this plant listed under its synonyms Senecio covillei or Senecio covillei var. scorzonella in older plant references, but don’t let the name variations confuse you – it’s all the same wonderful wildflower.

Where Does Sierra Ragwort Naturally Grow?

This mountain native has a relatively limited but special range, growing naturally in California and Nevada. You’ll typically find it making its home in the higher elevations of the Sierra Nevada mountain range, where it has adapted to the unique conditions of alpine and subalpine environments.

Why Choose Sierra Ragwort for Your Garden?

There are several compelling reasons why Sierra ragwort deserves a spot in your native plant collection:

  • Pollinator magnet: Those bright yellow flowers aren’t just pretty – they’re excellent sources of nectar for native bees, butterflies, and other beneficial insects
  • Low maintenance: Once established, this mountain native is quite drought tolerant and requires minimal care
  • True native: As a plant species native to the lower 48 states, you’re supporting local ecosystems and biodiversity
  • Versatile growing conditions: With its facultative wetland status, it can adapt to both moist and drier conditions

Perfect Garden Settings

Sierra ragwort shines in several types of garden settings:

  • Rock gardens and alpine plant collections
  • Native wildflower meadows
  • Naturalized landscape areas
  • Native plant demonstration gardens

This perennial forb works particularly well when you’re trying to recreate the feel of a mountain meadow or when you want to add authentic native character to your landscape.

Growing Conditions and Care

Sierra ragwort is surprisingly adaptable for a mountain native. Here’s what it prefers:

  • Sunlight: Full sun to partial shade
  • Soil: Well-draining soils; tolerates poor soil conditions
  • Water: Drought tolerant once established, but can handle occasional moisture
  • Hardiness: Suitable for USDA zones 5-8

The key to success with Sierra ragwort is good drainage. Like many mountain plants, it doesn’t appreciate soggy feet, especially during winter months.

Planting and Maintenance Tips

Getting started with Sierra ragwort is refreshingly straightforward:

  • Plant in spring after the last frost date
  • Ensure excellent soil drainage – amend heavy clay soils with sand or gravel
  • Water regularly during the first growing season to establish roots
  • Once established, water sparingly – this plant prefers the tough love approach
  • Deadhead spent flowers to encourage continued blooming
  • Allow some flowers to go to seed if you want the plant to self-sow

A Note About Sourcing

When adding Sierra ragwort to your garden, always source plants or seeds from reputable native plant nurseries. This ensures you’re getting true-to-type plants that will thrive in cultivation while supporting responsible horticultural practices.

The Bottom Line

Sierra ragwort offers native plant enthusiasts a wonderful opportunity to grow a piece of the Sierra Nevada’s natural beauty. While it may not be the showiest plant in your garden, its cheerful yellow blooms, pollinator appeal, and easy-going nature make it a valuable addition to any native plant collection. Plus, there’s something satisfying about successfully growing a mountain wildflower that connects your garden to the wild landscapes of the American West.

Wetland Status

The rule of seasoned gardeners and landscapers is to choose the "right plant for the right place" matching plants to their ideal growing conditions, so they'll thrive with less work and fewer inputs. But the simplicity of this catchphrase conceals how tricky plant selection is. While tags list watering requirements, there's more to the story.

Knowing a plant's wetland status can simplify the process by revealing the interaction between plants, water, and soil. Surprisingly, many popular landscape plants are wetland species! And what may be a wetland plant in one area, in another it might thrive in drier conditions. Also, it helps you make smarter gardening choices and grow healthy plants with less care and feeding, saving you time, frustration, and money while producing an attractive garden with greater ecological benefits.

Regions
Status
Moisture Conditions

Arid West

FAC

Facultative - Plants with this status can occur in wetlands and non-wetlands

Western Mountains, Valleys, and Coast

FAC

Facultative - Plants with this status can occur in wetlands and non-wetlands

Sierra Ragwort

Classification

Group

Dicot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Magnoliopsida - Dicotyledons

Subclass

Asteridae

Order

Asterales

Family

Asteraceae Bercht. & J. Presl - Aster family

Genus

Senecio L. - ragwort

Species

Senecio scorzonella Greene - Sierra ragwort

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