Juncus tenuis 'Blue Dart' (Slender Rush)

Juncus tenuis, the slender rush, is a clump-forming, round-stemmed perennial in the Juncaceae (rush family). Slender rush grows to be between 15 and 60 cm tall. Generally considered a weed, it is rarely sold by retailers as a household container plant. Where it is introduced, it is colloquially called path rush, field rush, slender yard rush, poverty rush or wiregrass.

The variety 'Blue Dart' features attractive, linear, blue to blue-green foliage. It is sometimes used in containers as an alternative to dracaena. 'Blue Dart' is sometimes sold in commerce today as a cultivar of Juncus inflexus and Juncus tenuis. Industry naming is confused. Plant form is closer to Juncus inflexus and may indeed by a cultivar thereof.