Three-Hulled Rush
Juncus triglumis
- Native to:
- Aleutian Is., Austria, Bulgaria, Canada, China, Czechia-Slovakia, Finland, Føroyar, France, Germany, Greenland, Iceland, India, Italy, Japan, Kirgizstan, Korea, Kuril Is., Labrador, Nepal, North Caucasus, Norway, Pakistan, Poland, Romania, Russia, Spain, Svalbard, Sweden, Switzerland, Tadzhikistan, Transcaucasus, Ukraine, United States, Uzbekistan
Todd Boland (www.inaturalist.org)
Taxonomy
- Division:
- Magnoliophyta | - Flowering plants
- Family:
- Juncaceae
- Genus:
- Juncus
- Species:
- Juncus triglumis
- USDA Symbol:
- JUTR4
Growth Characteristics
- Life Cycle:
- Perennial
- Growth Habit:
- Graminoid
- Height:
- 25 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, peaty soil
- pH:
- 5.0 - 7.0 (acidic to neutral)
- Drainage:
- excellent drainage required
- Moisture:
- consistently moist
- Notes:
- commonly found in alpine and arctic regions
Propagation & Germination
- Stratification:
- Cold/moist stratification required — 30–60 days
- Germination Time:
- 14–42 days
- Notes:
- Requires light for germination; sow on surface of moist medium.
The above propagation data sourced from Claude AI