How to Grow Juncus Spiralis

Select a planting site for Juncus spiralis. It requires boggy conditions around the edge of a pond where the soil is constantly wet, and can tolerate water up to 4 inches deep. Juncus spiralis does best in partial shade, but can tolerate full sun.

Remove the Juncus spiralis from its nursery container in the spring. Cut the container away from the plant with pruning shears if it has become severely pot-bound.

Wash the soil away from the Juncus spiralis so you can clearly see the plant. Cut any dead roots away from the rest of the plant, and carefully separate the remaining roots into about four even sections. Slice the sections apart with a clean, sharp knife.

Dig a narrow, deep hole in the wet soil with a gardening trowel. Place a pond fertilizer tablet in the bottom of the hole, and place a division of Juncus spiralis in the hole. Push the soil over the hole to hold the plant in place.

Fertilize Juncus spiralis once a month during its growing season with pond fertilizer tablets, according to the manufacturer's instructions.

Divide the plant in the spring if it becomes overgrown. Dig the plant out of the soil with a shovel without disturbing the roots. Wash the soil from the roots and cut the plant into four sections with a sharp knife, ensuring that each section has an equal amount of roots. Plant the four sections in separate areas.