Eyebright
Euphrasia frigida
- Native to:
- Canada, Finland, Føroyar, Germany, Greenland, Iceland, Ireland, Labrador, Norway, Russia, Svalbard, Sweden, United States
Ida B D Jacobsen (www.inaturalist.org)
Taxonomy
- Division:
- Magnoliophyta | - Flowering plants
- Family:
- Orobanchaceae
- Genus:
- Euphrasia
- Species:
- Euphrasia frigida
- USDA Symbol:
- EUFR8
Growth Characteristics
- Life Cycle:
- Annual
- Growth Habit:
- Forb/herb
- Height:
- 20 cm
- Light Requirements:
- Full Sun
- Drought Tolerance:
- Low
- Bloom Months:
- jun,jul,aug
- Bloom Colors:
- white, purple
Soil Requirements
- Soil Type:
- rocky, well-drained, nutrient-poor soil
- pH:
- 5.5 - 7.0 (slightly acidic to neutral)
- Drainage:
- excellent drainage required
- Moisture:
- dry to moderate
- Notes:
- often found in alpine or subalpine regions
Propagation & Germination
- Stratification:
- Cold/moist stratification required — 60–90 days
- Germination Time:
- 14–42 days
- Notes:
- Hemiparasitic; requires host plant roots for successful establishment. Seeds may need light for germination.