Packera cana (Woolly groundsel)

Other names: Gray ragwort, Grey ragwort, Silvery ragwort, Tall butterweed, Woolly butterweed, Houndstooth groudsel, Senecio canus, Senecio convallium, Senecio collinus, Senecio harbourii, Senecio oreopolus, Senecio hallii

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Where to grow

Soil type
  • Chalky
  • Loamy
  • Sandy
Soil drainage
  • Well-drained
Soil pH
  • Alkaline
  • Neutral
  • Acid
Sunlight
  • Full Sun
Aspect
  • East
  • South
  • North
Exposure
  • Exposed
  • Sheltered

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Additional plant details

Cultivation

Grow in dry, rocky, well-drained soil in full sun. Tolerates some clay. Drought tolerant once established. Grows at elevations from 200-3,700m (650-12,000').

Suggested uses

Ground Cover, Beds and borders, Cottage/Informal, Wildflower, Bees (attract & feed bees), Desert garden/Xeriscaping, Drought Tolerant, Rock, Gravel, Meadow, Prairie planting, Banks and Slopes

UK hardiness

H7

USDA zones

Zone 3, Zone 4, Zone 5, Zone 6, Zone 7, Zone 8, Zone 9

Sunset zone

WUCOLS

North-Central Coastal = Unknown
Central Valley = Unknown
South Coastal = Unknown
South Inland = Unknown
High and Intermediate Desert = Inappropriate
Low Desert = Inappropriate

Foliage

Semi-evergreen

Habit

Rosette, Erect flower stem

Native to

Western United States, Central United States, Southern Canada, Rocky Mountains (United States)

Drought tolerant

Yes

Flood tolerant

No

Toxicity

All parts are toxic if consumed in large quantities.

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