Largeflower Speargrass
Arctopoa eminens
- Native to:
- Aleutian Is., Canada, Japan, Kuril Is., Labrador, Russia, United States
iNaturalist: © michael_oldham (iNaturalist #102189841)






Taxonomy
- Division:
- Magnoliophyta | - Flowering plants
- Family:
- Poaceae
- Genus:
- Arctopoa
- Species:
- Arctopoa eminens
- USDA Symbol:
- POEM
Growth Characteristics
- Life Cycle:
- Perennial
- Growth Habit:
- Graminoid
- Height:
- 40 cm
- Light Requirements:
- Full Sun
- Drought Tolerance:
- Low
- Bloom Months:
- jun,jul,aug
Garden & Ecology Notes
- Wildlife Value:
- waterfowl, shorebirds
- Salt Tolerant:
- Yes
Soil Requirements
- Soil Type:
- moist, fertile, well-drained loam
- pH:
- 6.0 - 7.5 (slightly acidic to neutral)
- Drainage:
- excellent drainage required
- Moisture:
- consistently moist
- Notes:
- prefers open, sunny habitats
Propagation & Germination
- Stratification:
- Cold/moist stratification required — 30–60 days
- Germination Time:
- 7–21 days
- Notes:
- Light may enhance germination. Seeds germinate best at cool temperatures typical of arctic and subarctic conditions.
The above propagation data sourced from Claude AI