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Swordleaf rush

Juncus ensifolius

Also called Sword-leaved rush, Three Stamened Rush, Dagger Leaved Rush, Equitant Leaved Rush, Sword Leaf Rush, Dagger Rush, Swordleaved Rush

Swordleaf rush
Photo: Gordon Leppig & Andrea J. Pickart, Public domain

Swordleaf rush is a rhizomatous perennial rush forming clumps of stems 20 to 60 cm tall, native to wet ground across western North America and Japan. Keep its roots moist and give it open, sunny to lightly shaded wet conditions.

Family
Juncaceae (Junc family)
Grows as
Perennial
Light
Full sun, Part shade
Water
Keep the soil constantly moist or wet, and never let it dry out.
Soil
Wet, fertile, loamy or clay soil, or boggy soil at pond margins.
Temperature
Hardy in cool temperate climates; tolerates winter cold well and suits roughly -20 to 30 °C.
How easy
Easy
Native range
Kuril Is. to N. & C. Japan, Alaska to N. & C. Mexico
Climate
temperate

About

Juncus ensifolius is a species of rush known by the common names swordleaf rush, sword-leaved rush, and three-stamened rush. It is native to much of western North America from Alaska to central Mexico, and into eastern Canada. It is present in Japan and far eastern Russia, and it has been introduced to many other regions of the world, including Europe, New Zealand, Hawaii, and Australia. It is a plant of wet areas in many types of habitat. This is a rhizomatous perennial herb forming clumps of stems 20 to 60 centimeters tall. The flat but curving leaves are mostly located at the base of the stems and are variable in length. The inflorescence is an array of many rounded clusters of many flowers each. Each flower has a number of dark brown to black tepals a few millimeters long and usually three small stamens enclosed between them.

Other Juncus plants

Dwarf Rush · Spiny rush · Arctic rush · Jointleaf rush · Mexican Rush · Baltic Rush · Toad rush · Bulbous rush · Canadian rush · Dudley's rush · Common rush · Thread rush

Text excerpted from the Wikipedia article Juncus ensifolius by its contributors, under CC BY-SA 4.0; the excerpts and the care summary drawn from them are shared under the same licence.

The care summary was written by AI (Claude, Anthropic) from the sources on this page, with general growing knowledge where they are silent. Check before relying on it.

Life form, climate and native range: World Checklist of Vascular Plants, Royal Botanic Gardens, Kew (CC BY 3.0), reformatted; see Plants of the World Online.

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