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Three-hulled rush

The Three-hulled rush (Juncus triglumis)

is a fully hardy perennial deciduous grass with white flowers in early Summer, mid Summer and late Summer. It grows well in semi-shade, and prefers high levels of water. This plant requires a minimum of 135 frost free days to grow successfully. It has low drought tolerance.


Juncus triglumis grows in soils ranging from a pH of 6 (acidic ranges from 5.6 to 6) to 7.5 (neutral ranges from 6.6 to 7.5). It is adapted to silt, loam, clay loam, silt loam, sandy loam, silty clay loam and sandy clay loam soils, and prefers medium fertility.


This is a erect plant and has a clump forming growth form, and has an ultimate height of 0.2m / 7.9in.


The leaves are green in Summer.


Hedge (none).


Very resistant to fire.

Fruit and seed

There is a low fruit/seed abundance beginning in Summer and ending in Summer.


Propagation techniques include bare root and seed.

-23°C / -9.4F 6 to 7.5 0.2m / 7.9in
Scientific classifications [Edit]
Genus ? Juncus
Specific epithet ? triglumis
Common names
Three-hulled rush (United States)
IPNI details on Juncus triglumis
References [edit] ?

Plant added by plantdatabase

Juncus triglumis http://plantdatabase.co.uk/Juncus_triglumis
© Plant Database Ltd., 17th April 2014     Web: http://plantdatabase.co.uk     Email: mail@plantdatabase.co.uk
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