Woolly Groundsel
Packera cana
- Native to:
- Canada, United States
Andrey Zharkikh (www.flickr.com) from Salt Lake City, USA







Taxonomy
- Division:
- Magnoliophyta | - Flowering plants
- Family:
- Asteraceae
- Genus:
- Packera
- Species:
- Packera cana
- USDA Symbol:
- PACA15
Growth Characteristics
- Life Cycle:
- Perennial
- Growth Habit:
- Forb/herb , Subshrub
- Height:
- 45 cm
- Light Requirements:
- Full Sun
- Drought Tolerance:
- High
- Bloom Months:
- may,jun,jul,aug
- Bloom Colors:
- yellow
Wildlife Benefits
- Bees:
- ★☆☆☆☆ Documented bee visitation (GBIF)
- Butterflies & Moths:
- ★☆☆☆☆ Documented Lepidoptera association (GBIF)
Keystone Species Ranking
- Caterpillar Keystone:
- ★☆☆☆☆ Butterfly & moth species supported by this genus (NWF)
Garden & Ecology Notes
- Wildlife Value:
- bees, butterflies
- Deer Resistant:
- Yes
- Fire Ecology:
- Fire adapted — tolerates or benefits from fire
- Fire Notes:
- Resprouts from rootstock after fire; common in fire-maintained prairies and grasslands.
Soil Requirements
- Soil Type:
- sandy, well-drained, nutrient-poor soil
- pH:
- 6.0 - 7.5 (slightly acidic to neutral)
- Drainage:
- excellent drainage required
- Moisture:
- dry to moderate
- Notes:
- Thrives in open, sunny areas with poor soil
Propagation & Germination
- Stratification:
- Cold/moist stratification required — 30–60 days
- Germination Time:
- 14–30 days
- Notes:
- Light may aid germination. Cold stratification improves germination rates.
The above propagation data sourced from Claude AI
Pre-treatment: Sow seed into trays filled with stabilized medium plugs (Q-plugs). Seal trays inside plastic boxes and place into cold stratification (1 to 3 °C) for 120 days. Check trays weekly and keep moist. If mold is evident, treat trays with 1% hydrogen peroxide.
Source: npn.rngr.net