North America Native Plant

Gander’s Ragwort

Botanical name: Packera ganderi

USDA symbol: PAGA5

Life cycle: perennial

Habit: forb

Native status: Native to the lower 48 states  

Synonyms: Senecio ganderi T.M. Barkley & R.M. Beauch. (SEGA)   

Gander’s Ragwort: A Rare California Native Worth Protecting in Your Garden If you’re passionate about California native plants and conservation, you may have heard whispers about Gander’s ragwort (Packera ganderi) – a delicate wildflower that’s as rare as it is beautiful. This petite perennial deserves a spot in the conversation ...

Rare plant alert!

Region: Conservation status by state

Status: S2: Status is uncertain but is somewhere between the following rankings: Imperiled: Extremely rare due to factor(s) making it especially vulnerable to extinction. Typically 6 to 20 occurrences or few remaining individuals (1,000 to 3,000) ⚘

Gander’s Ragwort: A Rare California Native Worth Protecting in Your Garden

If you’re passionate about California native plants and conservation, you may have heard whispers about Gander’s ragwort (Packera ganderi) – a delicate wildflower that’s as rare as it is beautiful. This petite perennial deserves a spot in the conversation about protecting our state’s botanical treasures, and with the right approach, it might even find a home in your native garden.

What Makes Gander’s Ragwort Special?

Gander’s ragwort is a charming herbaceous perennial that belongs to the sunflower family. Don’t let its humble appearance fool you – this little forb packs a punch when it comes to ecological value. During its blooming season, it produces clusters of cheerful yellow, daisy-like flowers that seem to glow against its narrow, green foliage.

You might also encounter this plant listed under its former scientific name, Senecio ganderi, though botanists now classify it as Packera ganderi. Regardless of what you call it, this plant represents something truly special in California’s botanical landscape.

A True California Endemic

Gander’s ragwort is found exclusively in California, making it a true Golden State original. This native plant has evolved specifically to thrive in our Mediterranean climate and unique soil conditions, primarily in the chaparral and woodland areas of southern California.

The Conservation Reality Check

Here’s where things get serious, fellow plant lovers. Gander’s ragwort carries a Global Conservation Status of S2, which means it’s considered Imperiled. In plain terms, this plant is extremely rare, with typically only 6 to 20 known occurrences and potentially just 1,000 to 3,000 remaining individuals in the wild.

What this means for gardeners: While we absolutely encourage supporting native plants, Gander’s ragwort should only be grown using responsibly sourced material. Never collect seeds or plants from wild populations – this could push local populations closer to extinction.

Garden Appeal and Growing Conditions

If you can source Gander’s ragwort responsibly (through specialized native plant nurseries or conservation programs), it offers several appealing qualities:

  • Delicate yellow flowers that attract native pollinators
  • Low-maintenance once established
  • Drought-tolerant, perfect for water-wise gardens
  • Compact growth habit ideal for small spaces
  • Authentic California heritage

Growing Gander’s Ragwort Successfully

This rare beauty thrives in USDA hardiness zones 9-10, making it suitable for much of California’s mild climate regions. Here’s how to give it the best care:

Light: Partial shade to full sun – it’s quite adaptable to different light conditions

Soil: Well-draining soil is absolutely essential. Like many California natives, it despises soggy feet

Water: Once established, it’s remarkably drought-tolerant. Water regularly during the first growing season, then reduce to occasional deep watering

Timing: Plant in fall to allow roots to establish during the mild winter months

Supporting Pollinators and Wildlife

One of the most compelling reasons to grow Gander’s ragwort (when sourced responsibly) is its value to local ecosystems. The nectar-rich flowers attract native bees, butterflies, and other beneficial insects that have co-evolved with California’s native plants. By including rare natives like this in your garden, you’re supporting biodiversity and helping maintain the intricate web of relationships that keep our ecosystems healthy.

Garden Design Ideas

Gander’s ragwort works beautifully in:

  • Native California wildflower gardens
  • Drought-tolerant landscape designs
  • Wildlife and pollinator gardens
  • Conservation-focused plantings
  • Small-space gardens where every plant counts

The Bottom Line

Gander’s ragwort represents both an opportunity and a responsibility. While it’s a wonderful addition to native California gardens, its rarity means we must approach it with respect and caution. If you’re drawn to this special plant, work with reputable native plant societies or conservation organizations to ensure you’re supporting, not harming, wild populations.

Consider Gander’s ragwort as part of a larger commitment to California native plant conservation – every responsibly grown rare native in our gardens is a small but meaningful contribution to preserving our state’s irreplaceable botanical heritage.

Gander’s 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

Packera Á. Löve & D. Löve - ragwort

Species

Packera ganderi (T.M. Barkley & R.M. Beauch.) W.A. Weber & Á. Löve - Gander's ragwort

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