Seeds from Lesser Corkscrew Rush Juncus effusus, Spiralis. This curious rush forms irregular clumps of round and twisted 4″-8″ foliage. Great for borders or in single pots. Prefers full sun to part shade; moist to wet soil; protect in hot climates by providing shallow water. Hardy in zones 4-10. These seeds are very small and need to be sown on the top of good seed starting soil and kept moist.