North America Native Plant

Northwestern Groundsel

Botanical name: Packera contermina

USDA symbol: PACO53

Life cycle: perennial

Habit: forb

Native status: Native to Canada ⚘ Native to the lower 48 states  

Synonyms: Senecio conterminus Greenm. (SECO14)   

Northwestern Groundsel: A Rare Native Wildflower Worth Protecting If you’re passionate about growing native plants and supporting biodiversity, northwestern groundsel (Packera contermina) might just be the hidden gem your garden needs. This lesser-known perennial wildflower brings both beauty and ecological value to northern landscapes, though its rarity makes it a ...

Rare plant alert!

Region: Conservation status by state

Status: S3S4: Status is uncertain but is somewhere between the following rankings: Vulnerable: Either very rare and local throughout its range, found only in a restricted range (even if abundant at some locations), or factors are making it vulnerable to extinction. Typically 21 to 100 occurrences or between 3,000 and 10,000 individuals ⚘ Apparently Secure: Uncommon but not rare, and usually widespread. Possibly cause for longterm concern. Typically more than 100 occurrences in the state or more than 10,000 individuals ⚘

Northwestern Groundsel: A Rare Native Wildflower Worth Protecting

If you’re passionate about growing native plants and supporting biodiversity, northwestern groundsel (Packera contermina) might just be the hidden gem your garden needs. This lesser-known perennial wildflower brings both beauty and ecological value to northern landscapes, though its rarity makes it a plant that deserves special consideration.

What is Northwestern Groundsel?

Northwestern groundsel is a native perennial forb that belongs to the sunflower family. As a forb, it’s an herbaceous plant without woody stems, meaning it dies back to the ground each winter and returns fresh each spring. You might also see it listed under its former scientific name, Senecio conterminus, in older gardening references.

This charming wildflower produces clusters of small, bright yellow daisy-like flowers that bloom from late spring into early summer, creating cheerful splashes of color in naturalized settings.

Where Does Northwestern Groundsel Grow Naturally?

This native beauty calls the northern reaches of North America home. You’ll find northwestern groundsel growing naturally in Alberta, British Columbia, Yukon, Northwest Territories, and Montana. Its distribution reflects its preference for cooler climates and shorter growing seasons.

Why Consider Growing Northwestern Groundsel?

There are several compelling reasons to include this native plant in your garden:

  • Native plant benefits: Supporting local ecosystems by growing plants that evolved in your region
  • Pollinator support: Like other members of the Packera genus, it likely provides nectar and pollen for native bees and other beneficial insects
  • Low maintenance: Once established, native plants typically require less water and care than non-native alternatives
  • Unique addition: Few gardeners grow this species, making it a conversation starter

A Word About Rarity

Here’s something important to know: northwestern groundsel has a conservation status of S3S4, which indicates it may be uncommon to fairly common but still warrants monitoring. If you decide to grow this plant, please ensure you source it responsibly from reputable native plant nurseries or seed companies that ethically collect their material. Never harvest plants or seeds from wild populations, as this can harm already vulnerable populations.

Growing Conditions and Care

While specific growing information for northwestern groundsel is limited, we can make educated assumptions based on its native habitat and related species:

  • Hardiness zones: Likely zones 2-5, reflecting its northern distribution
  • Sunlight: Probably tolerates full sun to partial shade
  • Soil: Well-draining soil is likely preferred, as with most wildflowers
  • Water: Once established, should be drought-tolerant like most native plants

Best Garden Settings

Northwestern groundsel works beautifully in:

  • Native plant gardens
  • Naturalized landscapes
  • Rock gardens
  • Wildflower meadows
  • Habitat restoration projects

The Bottom Line

Northwestern groundsel offers northern gardeners a chance to grow a truly regional native species while supporting local biodiversity. Its rarity makes it even more special – you’ll be participating in conservation efforts right in your own backyard. Just remember to source plants or seeds responsibly, and consider yourself a steward of this unique wildflower.

If you can’t find northwestern groundsel or want additional native options, ask your local native plant society about other Packera species or native wildflowers suited to your specific area. Every native plant you grow makes a difference for local wildlife and ecosystem health.

Northwestern Groundsel

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 contermina (Greenm.) J.F. Bain - northwestern groundsel

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