Jointleaf Rush
Juncus articulatus
- Native to:
- Afghanistan, Albania, Algeria, Austria, Azores, Baleares, Baltic States, Belarus, Belgium, Bulgaria, Canada, Canary Is., China, Corse, Cyprus, Czechia-Slovakia, Denmark, East Aegean Is., Finland, Føroyar, France, Germany, Great Britain, Greece, Hungary, Iceland, India, Iran, Iraq, Ireland, Italy, Japan, Kazakhstan, Kirgizstan, Korea, Kriti, Krym, Kuril Is., Labrador, Lebanon-Syria, Libya, Madeira, Mexico, Morocco, Nepal, Netherlands, North Caucasus, Norway, NW. Balkan Pen., Pakistan, Palestine, Poland, Portugal, Prince Edward I., Romania, Russia, Sardegna, Sicilia, Spain, Sweden, Switzerland, Tadzhikistan, Transcaucasus, Tunisia, Türkiye, Türkiye-in-Europe, Turkmenistan, Ukraine, United States, Uzbekistan, Vietnam, Virgin Islands
iNaturalist: © jokerrr83 (iNaturalist #235179636)
Taxonomy
- Division:
- Magnoliophyta | - Flowering plants
- Family:
- Juncaceae
- Genus:
- Juncus
- Species:
- Juncus articulatus
- USDA Symbol:
- JUAR4
Growth Characteristics
- Life Cycle:
- Perennial
- Growth Habit:
- Graminoid
- Height:
- 90 cm
- Light Requirements:
- Full Sun
- Drought Tolerance:
- Low
- Bloom Months:
- jun,jul,aug
- Bloom Colors:
- greenish-brown
Wildlife Benefits
- Butterflies & Moths:
- ★★★★☆ Documented Lepidoptera association (GBIF)
- Caterpillars:
- ★☆☆☆☆ Recorded caterpillar host plant (HOSTS Database)
Keystone Species Ranking
- Caterpillar Keystone:
- ★★☆☆☆ Butterfly & moth species supported by this genus (NWF)
Host Plant for Caterpillars
Jutta Arctic (Oeneis jutta)
Garden & Ecology Notes
- Wildlife Value:
- birds, waterfowl
- Deer Resistant:
- Yes
Soil Requirements
- Soil Type:
- moist, nutrient-rich, clay or loam
- pH:
- 5.5 - 7.5 (slightly acidic to neutral)
- Drainage:
- tolerates poor drainage
- Moisture:
- consistently moist
- Notes:
- often found in wetlands and marshes
Propagation & Germination
- Stratification:
- Cold/moist stratification required — 30–60 days
- Germination Time:
- 14–30 days
- Notes:
- Seeds require cold stratification for 30-60 days; surface sow on moist soil and keep consistently wet.
Pre-treatment: Cold stratification for 150 days, or 'None required'
Establishment: Seeds are field collected from marshes around Parsnip Lake. The climate in the Rogue Valley during the growing period (June to September) is very dry and clear. Average daily high in the summer averages 86°F with occasional highs of over 105°F. Summer humidity is usually below 30%.
Source: npn.rngr.net