Rushes (Juncus) like to spend some of the year drier so are ideal in a marshy part of the garden.
If planting in the pond, use a pond basket lined with jute and fill up with special pond medium. Plant the rush in the middle of the basket and fill up with more of the pond medium. Cover the top of the soil with the remaining jute and sprinkle with a layer of gravel. Plant at a depth that will leave the top of the basket level with the surface of the water. If your pond is too deep, stand the basket on a couple of bricks. Enjoys full sun or part shade.

Combining different rushes

Rush (Juncus) is a graceful aquatic, shoreline or marsh plant that gives your pond a natural look.  Along the edge of a natural pond or stream plant rush together with Anagallis tenella (Bog Pimpernel) and the yellow iris (Iris pseudacorus). These shore plants will certainly encourage wildlife.

Juncus (rush) is an easily grown aquatic that requires little or no maintenance. Snip off withered foliage in the spring and remove it from the pond.
Rush grows into clumps and is a hardy perennial.
If the clump grows too large, remove the whole plant from the pond in May and divide the clump into smaller pieces. Replant only one or two pieces of the plant.

Rush flowers are very small but do still have decorative value because they remain on the stems and, especially in groups, give off a dark brown haze around the plant. The leaf is just a thick round stem with a white inner pith. This was actually used long ago as pith in oil lamps. Calamus grows into clumps and is a hardy perennial.
Juncus has its own classification (Juncaceae).
This is a plant suitable for shallow waters up to 15 cm deep.