Twoflowered Rush
Juncus biglumis
- Native to:
- Austria, Canada, Finland, Føroyar, Greenland, Iceland, Kuril Is., Labrador, Norway, Russia, Svalbard, Sweden, United States
(c) Ida B D Jacobsen, some rights reserved (CC BY)
Taxonomy
- Division:
- Magnoliophyta | - Flowering plants
- Family:
- Juncaceae
- Genus:
- Juncus
- Species:
- Juncus biglumis
- USDA Symbol:
- JUBI2
Growth Characteristics
- Life Cycle:
- Perennial
- Growth Habit:
- Graminoid
- Height:
- 20 cm
- Light Requirements:
- Full Sun
- Drought Tolerance:
- Low
- Bloom Months:
- jun,jul,aug
- Bloom Colors:
- brown
Keystone Species Ranking
- Caterpillar Keystone:
- ★★☆☆☆ Butterfly & moth species supported by this genus (NWF)
Garden & Ecology Notes
- Wildlife Value:
- waterfowl, small mammals
- Deer Resistant:
- Yes
Soil Requirements
- Soil Type:
- moist, nutrient-poor, sandy or peaty soil
- pH:
- 5.5 - 7.0 (slightly acidic to neutral)
- Drainage:
- tolerates poor drainage
- Moisture:
- consistently moist
- Notes:
- typically found in alpine and subarctic regions
Propagation & Germination
- Stratification:
- Cold/moist stratification required — 30–60 days
- Germination Time:
- 14–42 days
- Notes:
- Requires light for germination; cold-moist stratification improves germination rates.
The above propagation data sourced from Claude AI