North America Native Plant

Broom-like Ragwort

Botanical name: Senecio spartioides var. spartioides

USDA symbol: SESPS2

Life cycle: perennial

Habit: subshrub

Native status: Native to the lower 48 states  

Synonyms: Senecio spartioides Torr. & A. Gray var. granularis Maguire & A.H. Holmgren ex Cronquist (SESPG)  âš˜  Senecio toiyabensis S.L. Welsh & Goodrich (SETO6)   

Broom-like Ragwort: A Hardy Native for Water-Wise Gardens If you’re looking for a tough, drought-tolerant native that won’t demand constant attention, broom-like ragwort (Senecio spartioides var. spartioides) might just be your new garden buddy. This unassuming perennial herb has been quietly thriving across the American West for ages, and it’s ...

Broom-like Ragwort: A Hardy Native for Water-Wise Gardens

If you’re looking for a tough, drought-tolerant native that won’t demand constant attention, broom-like ragwort (Senecio spartioides var. spartioides) might just be your new garden buddy. This unassuming perennial herb has been quietly thriving across the American West for ages, and it’s ready to bring that same resilience to your landscape.

What Makes Broom-like Ragwort Special?

Don’t let the name fool you – this isn’t your typical ragwort. Broom-like ragwort gets its common name from its distinctive growth pattern, with narrow, linear leaves and upright branching stems that give it an almost broom-like appearance. During blooming season, it produces cheerful yellow daisy-like flowers that add a pop of sunshine to any garden.

As a true native of the lower 48 states, this perennial herb has earned its stripes surviving in some pretty challenging conditions. It’s what botanists call a forb – basically a flowering plant that doesn’t develop woody stems but comes back year after year from its underground parts.

Where Does It Call Home?

Broom-like ragwort has quite the geographic range, naturally occurring across nine western states: Arizona, California, Colorado, Nebraska, Nevada, New Mexico, South Dakota, Utah, and Wyoming. This wide distribution is a testament to its adaptability and hardiness.

Why Your Garden (and Local Wildlife) Will Love It

Here’s where this plant really shines – it’s a pollinator magnet! Those bright yellow flowers aren’t just pretty to look at; they’re practically a neon sign for butterflies, native bees, and other beneficial insects. If you’re trying to create a more wildlife-friendly space, broom-like ragwort is definitely worth considering.

From a design perspective, this plant works beautifully in:

  • Xeriscaping and drought-tolerant gardens
  • Native plant landscapes
  • Naturalistic prairie-style plantings
  • Low-maintenance garden borders

Growing Broom-like Ragwort: The Easy Route

One of the best things about this native is how relatively low-maintenance it is once established. Here’s what you need to know:

Ideal Growing Conditions

  • Sunlight: Full sun is best – this plant loves soaking up those rays
  • Soil: Well-draining soil is crucial; it’s not picky about soil type but hates wet feet
  • Water: Drought-tolerant once established, though occasional deep watering during dry spells won’t hurt
  • Climate: Hardy in USDA zones 4-8, making it suitable for a wide range of climates

Planting and Care Tips

Getting started with broom-like ragwort is refreshingly straightforward:

Planting: Spring is typically the best time to plant. If you’re starting from seed, you can direct sow in fall or start indoors in late winter. Give plants adequate spacing as they can spread once established.

Watering: Water regularly during the first growing season to help establish roots, then back off. This plant is built for dry conditions and too much water can actually harm it.

Maintenance: Minimal! You might want to deadhead spent flowers if you don’t want self-seeding, but many gardeners let it naturalize. Cut back in late fall or early spring if desired.

Is Broom-like Ragwort Right for Your Garden?

This native is an excellent choice if you’re looking to reduce water usage, support local pollinators, or create a more naturalistic landscape. It’s particularly perfect for gardeners in western states who want to work with plants that are naturally adapted to their local conditions.

However, keep in mind that like many natives, broom-like ragwort might not provide the flashy, continuous blooms of hybrid ornamentals. Its beauty is more subtle and seasonal, which fits perfectly in natural-style gardens but might not suit formal landscape designs.

If you’re ready to embrace a more sustainable, wildlife-friendly approach to gardening, broom-like ragwort could be exactly what your landscape needs. It’s proof that sometimes the best plants are the ones that have been thriving in your region all along!

Broom-like 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 spartioides Torr. & A. Gray - broom-like ragwort

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