Description of Juncus maritimus (Sea Rush)

Juncus maritimus is sea rush, a tough rush found in coastal marshes. It handles wet soil and wind, and it’s a good option if you want a stiffer, more upright rush than common soft rush.

Appearance

It forms dense clumps of upright, grey-green stems. Stems are firm and can reach 60 to 120cm in good conditions. Flower clusters are small and brownish, usually tucked to the side of the stems in summer.

Care Guide

It likes sun and it copes with wet ground. It also tolerates salt and exposure better than many bog plants.

• Sun: Full sun is best for strong, upright stems.
• Soil: Wet soil, heavy clay, or aquatic compost in a basket.
• Water: Boggy ground to shallow margins.
• Tidy up: Cut out dead stems in late winter.
• Division: Split clumps in spring if they get too large.

If growth is thin, improve light and keep competition down. Rushes don’t like being shaded out by broad-leaved plants.

Suitability for Bog Garden

This suits bog gardens as a structural plant, especially in exposed sites. Use it at the back or sides of a bed to create vertical lines and shelter for softer plants.

It is also useful near pond edges where splashing and fluctuating water levels happen.

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