North America Native Plant

Openwoods Ragwort

Botanical name: Senecio rapifolius

USDA symbol: SERA

Life cycle: perennial

Habit: subshrub

Native status: Native to the lower 48 states  

Openwoods Ragwort: A Lesser-Known Native Wildflower Worth Discovering If you’re passionate about native plants and love discovering hidden gems in the botanical world, openwoods ragwort (Senecio rapifolius) might just pique your curiosity. This perennial wildflower represents one of those fascinating native species that quietly exists in our western landscapes, though ...

Openwoods Ragwort: A Lesser-Known Native Wildflower Worth Discovering

If you’re passionate about native plants and love discovering hidden gems in the botanical world, openwoods ragwort (Senecio rapifolius) might just pique your curiosity. This perennial wildflower represents one of those fascinating native species that quietly exists in our western landscapes, though it rarely makes it onto the typical gardener’s radar.

What is Openwoods Ragwort?

Openwoods ragwort is a native perennial forb that belongs to the vast Senecio genus. As a forb, it’s essentially a non-woody flowering plant – think of it as nature’s version of a perennial flower that comes back year after year without developing woody stems like shrubs or trees. This plant has adapted to life in some of our more challenging western environments, making it a true survivor.

Where Does It Call Home?

This native beauty has carved out its niche in the American West, specifically calling Colorado, Idaho, South Dakota, and Wyoming home. You’ll find it thriving in the mountainous and high plains regions of these states, where it has evolved alongside other hardy western natives.

Should You Plant Openwoods Ragwort?

Here’s where things get a bit tricky – and honestly, quite intriguing. Openwoods ragwort appears to be one of those best kept secrets of the native plant world. While it’s definitely a legitimate native species, information about its cultivation, growing requirements, and garden performance is surprisingly scarce.

This scarcity of information could mean a few things:

  • It might be relatively rare in the wild
  • It may have very specific growing requirements that make cultivation challenging
  • It simply hasn’t caught the attention of the horticultural world yet

The Challenge of Growing Openwoods Ragwort

If you’re determined to grow this native plant, you’ll need to become something of a plant detective. Since specific growing information is limited, your best bet would be to:

  • Contact native plant societies in Colorado, Idaho, South Dakota, or Wyoming
  • Reach out to botanical gardens or universities in its native range
  • Study its natural habitat if you live in or can visit its native areas
  • Connect with specialized native plant nurseries that might have experience with rare species

A Word of Caution

Given the limited information available about this species, it’s possible that openwoods ragwort is relatively rare or has specific conservation concerns. If you do manage to locate seeds or plants, make absolutely sure they’re from ethical, legally-sourced suppliers who aren’t depleting wild populations.

Alternative Native Options

If you’re drawn to the idea of native ragworts but want something more readily available, consider looking into other native Senecio species that are better documented and more widely cultivated. Many native plant nurseries carry species like golden groundsel or other regional Senecio varieties that can provide similar ecological benefits with more established growing guidelines.

The Bottom Line

Openwoods ragwort represents one of those fascinating native plants that reminds us how much we still have to learn about our native flora. While it might not be the easiest plant to add to your garden, it serves as a wonderful example of the incredible diversity of native species that exist in our western states.

For most gardeners, this particular species might be more of a someday plant – one to keep on your wishlist while you build experience with other, more accessible native species. But for the truly adventurous native plant enthusiast, it could represent an exciting challenge and a chance to contribute to our understanding of lesser-known native species.

Sometimes the most rewarding gardening experiences come from the plants that make us work a little harder to understand them!

Openwoods 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 rapifolius Nutt. - openwoods ragwort

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