Wildflower Archive

prairie wildflower

Prairie Groundsel

Packera plattensis

Also known as Prairie Ragwort

Prairie Groundsel (Packera plattensis)
Douglas W. Jones

Native to much of the USA and southern Canada

Pennsylvania and southern Ontario to Saskatchewan and south-central Montana, south to Louisiana, Texas and Kansas

  • Light Full sun to shade Sun tolerance
  • Moisture Dry Moisture preference
  • Zones 3–9 Cold to heat range
  • Bloom May–Jun Flowering time
  • Height up to 2 ft to 0.6 m
  • Life cycle Biennial or perennial Annual to perennial
Full details, see below

In the garden

A prairie wildflower for sun through shade and lean, dry soil. At up to 2 ft, it suits meadows and sunny borders. Hardy in USDA zones 3–9.

Growing conditions

Light
Full sun Partial shade Full shade
Moisture
Dry Moist Wet

Hardiness zones

Find your zone:

Pollinators & wildlife

  • Butterflies Boisduval's Blue also Melissa Blue, Yvretta rhesus
  • Bees American Bumble Bee also Ligated Furrow Bee

Butterflies that use this plant

Documented host and nectar records. Each links to a planting guide for that butterfly.

Full plant details

Where it grows

Habitat
PrairieThe wild plant community it grows in.
Native range
Much of the USA and southern CanadaUnited States (25): AR, CO, IA, IL, IN, KS, KY, LA, MI, MN, MO, MT, NC, ND, NE, OH, OK, PA, SD, TN, TX, VA, WI, WV, WY. Canada (4): MB, ON, QC, SK. Where it grows wild on its own, by state and province.
Native distribution
Pennsylvania and southern Ontario to Saskatchewan and south-central Montana, south to Louisiana, Texas and KansasThe same native range, usually more exact than the state list, and often noting where it has spread beyond it.

Growing conditions

Light
Full sun to shadeHow much sun it takes, from full sun to full shade.
Moisture
DryThe soil dampness it prefers, from dry to wet.
Hardiness zones
USDA 3–9 · Canadian 3–7The cold-to-heat climate range it survives.
Soil
Dry soilsThe soils it grows in naturally.
Lime (CaCO₃) tolerance
HighHow well it copes with chalky, lime-rich soil.

Growth & form

Height
up to 2 ft (to 0.6 m)Typical mature height.
Life cycle
Biennial or perennialWhether it lives a single season (annual), two (biennial), or returns for years (perennial).

Flowers, foliage & fruit

Type
WildflowerWhat kind of plant it is.
Bloom
May–JunWhen it flowers.
Flower color
YellowThe bloom color, or colors.
Toxicity
None knownWhether any part is poisonous to people or pets.