Juncaceae
Twoflowered rush
Juncus biglumis
Also known as Juncus biglumis var. ajonskensis, Juncus biflorus, Two-flowered rush, Small rush
Zones 3–9Sun Partial SunWater ModerateCare Moderate
Native Plants · Rush · Wetland · Bog · Alpine · Moisture · Pond · Margin · Cool · Climate
Pet-safeAttracts pollinators
Currently out of stock everywhereStock updated 9/6/2026
Twoflowered rush is a specialized wetland plant that requires consistently moist to wet soil conditions. It thrives in cool climates and partial shade, making it ideal for bog gardens or pond margins. This alpine species needs protection from hot, dry conditions.
Growing conditions
The details behind the basics
- Daily light
- 4 hours
- Watering
- Keep soil consistently moist but not waterlogged · Every 7-10 days
- Maintenance
- Moderate
- Soil
- peat
- Soil pH
- 5–7.5
- Temperature
- -40°F to 95°F
- Cycle
- Perennial
Hardiness
USDA 3a-9b
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Form & growth
Mature size and habit
- Mature height
- 12 in – 4 ft
- Spread
- 2.5 ft
- Spacing
- 6 in apart
- Growth rate
- Moderate
- Root depth
- Shallow
- Flowers
- No
- Foliage
- Green · Medium
Ecology & origin
Where it belongs and what it brings
- Native to
- Alaska, Alberta, Altay, Austria, British Columbia, Buryatiya, Chita, Colorado, Finland, FøRoyar, Great Britain, Greenland, Iceland, Irkutsk, Kamchatka, Khabarovsk, Krasnoyarsk, Kuril Is., Labrador, Magadan
- Attracts
- Birds
Sources: trefle, usda
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