FAMILY: CYPERACEAE
This small species of perennial rush can’t be mistaken for any other plant. It has distinctive yellow-green triangular stems, each ornamented in summer with a neat cluster of golden-brown cone-like “clubs” about 2 cm from the stem-tips. (They resemble posies, and look like something that might be carried by a bridesmaid with attitude!)
The plant is worth growing if for no other reason than for use in floral arrangements.
Shown here in a bird bath, it is easily grown in any small container which holds water. It grows rather fast, so a pot of it is best refreshed each spring by having three quarters of the plant, and its rather dense root ball, removed and replaced with fresh soil or potting mix.
In a pond or dam, triangular club-rushes form a low thicket which grows from the water’s edge to the point where the water is too deep for them, which is at approximately 30cm. They will survive deeper water provide it is temporary, such as in a flood.
It also tolerates some drying out (as shown here at Cressbrook Dam) but probably needs good wet soil not far below the surface.
In creeks, it will only grow where there is permanent water, which must be either still or slow-flowing.
Triangular clubrush is a frog-favourite, and particularly useful for small garden ponds in wildlife friendly gardens.
This is one of the few shade-tolerant rushes. It can survive in full shade provided it is well lit (though it does tend to get leggy), and is equally happy in full sun.
It is also frost hardy.
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