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Packera cana (Hook.) W.A. Weber & Á. Löve
Woolly Groundsel, Silver-woolly Groundsel, Gray Ragwort
Asteraceae (Aster Family)
Synonym(s): Senecio canus, Senecio convallium, Senecio hallii, Senecio hallii var. discoidea, Senecio harbourii, Senecio howellii, Senecio purshianus
USDA Symbol: PACA15
USDA Native Status: L48 (N), CAN (N)
A slender-stemmed, clumped perennial, 4-12 in. high, with whitish foliage and flat, terminal clusters of yellow radiate flowers. Clumps in cultivation and disturbed areas can be 10 in. across, smaller when competing with other plants.
From the Image Gallery
Plant CharacteristicsDuration: Perennial
Size Notes: Up to about 1 foot tall.
Leaf: Dark Green
Fruit: Fruit is a cypsela (pl. cypselae). Though technically incorrect, the fruit is often referred to as an achene.
Bloom InformationBloom Color: Yellow
Bloom Time: May , Jun , Jul , Aug
DistributionUSA: CA , CO , ID , KS , MN , MT , ND , NE , NM , NV , OR , SD , UT , WA , WY
Canada: AB , BC , MB , SK
Native Distribution: CA to B.C., e. to Sask., the w. Dakotas & the Rockies
Native Habitat: Dry, rocky, cold, open plains
Growing ConditionsWater Use: Low
Light Requirement: Sun
Soil Moisture: Dry
CaCO3 Tolerance: Medium
Soil Description: Rocky soils.
BenefitConspicuous Flowers: yes
Find Seed or Plants
Find seed sources for this species at the Native Seed Network.
From the National Organizations DirectoryAccording to the species list provided by Affiliate Organizations, this plant is on display at the following locations:
Native Seed Network - Corvallis, OR
Web ReferenceWebref 38 - Flora of North America (2019) Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.
Additional resourcesUSDA: Find Packera cana in USDA Plants
FNA: Find Packera cana in the Flora of North America (if available)
Google: Search Google for Packera cana
MetadataRecord Modified: 2022-12-30
Research By: TWC Staff