Path Rush

Juncus tenuis (Juncaceae) is a clump-forming rush native throughout North America from Alaska to Quebec and south to Texas, now cosmopolitan in distribution. It grows rapidly to 6 to 24 inches tall, producing smooth, round stems topped by clusters of insignificant green flowers from May to September. Three slender leafy bracts (about 4 inches long) form a distinctive V-shape at the base of each inflorescence.

Path rush tolerates a wide range of conditions: sun to part shade, moist to wet soils, occasional flooding, and clay to loam substrates in a pH range of 6.0 to 8.0. It self-sows prolifically via wind-dispersed seeds and also spreads by rhizomes. Found in thickets, swamps, roadsides, sidewalk cracks, and parking strips, it is generally considered a weed and is rarely sold commercially. It may be useful in low-maintenance rain gardens or areas where tough, undemanding ground cover is needed. Hardy in Zones 2a to 9b.