Pacific Silverweed
Argentina anserina subsp. groenlandica
- Native to:
- Canada, Finland, Greenland, Iceland, Korea, Labrador, Norway, Russia, Sweden, United States
GBIF: Andreas Schneider
Taxonomy
- Division:
- Magnoliophyta | - Flowering plants
- Family:
- Rosaceae
- Genus:
- Argentina
- Species:
- Argentina anserina subsp. groenlandica
- USDA Symbol:
- AREG
Growth Characteristics
- Life Cycle:
- Perennial
- Growth Habit:
- Forb/herb
- Height:
- 15 cm
- Light Requirements:
- Full Sun
- Drought Tolerance:
- Low
- Bloom Months:
- may,jun,jul,aug
- Bloom Colors:
- yellow
- Ground Cover:
- Yes
Wildlife Benefits
- Bees:
- ★☆☆☆☆ Documented bee visitation (GBIF)
- Butterflies & Moths:
- ★☆☆☆☆ Documented Lepidoptera association (GBIF)
Host Plant for Caterpillars
Dark marbled carpet (Dysstroma citrata), Epidemia dorcas, Epidemia helloides
Garden & Ecology Notes
- Wildlife Value:
- bees, butterflies, birds
- Deer Resistant:
- Yes
- Salt Tolerant:
- Yes
Soil Requirements
- Soil Type:
- sandy, well-drained, nutrient-poor soil
- pH:
- 5.5 - 7.5 (slightly acidic to neutral)
- Drainage:
- excellent drainage required
- Moisture:
- consistently moist
- Notes:
- Common in coastal and riverine areas
Propagation & Germination
- Stratification:
- Cold/moist stratification required — 30–60 days
- Germination Time:
- 14–30 days
- Notes:
- Light aids germination. Seeds may have variable dormancy requiring cold stratification for best results.
The above propagation data sourced from Claude AI
Pre-treatment: None required
Establishment: Seeds are collected between September 5th and September 19th. Mature inflorescences are brown. Seed is reddish brown at maturity. A. egedii ssp. egedii is found in coastal strand and salt marsh communities; from Los Angeles County north to Alaska; also Asia.
Source: npn.rngr.net