- Rope twitch is a significant weed of crops, pastures and gardens in Tasmania.
How to identify rope twitch
- Rope twitch
is an erect, perennial (long lived) grass with numerous rhizomes
(underground-stems). In pastures and mown areas rope twitch sometimes
assumes a prostrate (ground hugging) habit and may not produce flowering
- Rope twitch produces an extensive root system with many
rhizomes. The rhizomes are white in colour and may be several metres
long. Shoots and roots develop from nodes along the rhizome.
- The leaves are medium to light green in colour and are finely pointed at the tips. In cross section the leaf forms a flat "V".
- The flowers consist of spikelets arranged alternately in two rows, one on each side of the stem.
- For further help in identifying rope twitch, search the Dennis Morris Weeds and Endemic Flora database
for rope twitch illustrations. If you are still in doubt about the weed
you are dealing with, contact your Regional Weed Management Officer on
1300 368 550 for help.
Image top: Rope twitch, photo: CDFA
Image above: Rope twitch grass stem, photo: Keir Morse
Rope twitch in Tasmania
Detailed management and control guidelines for rope twitch can be found in the Rope Twitch Control Guide. Refer also to Herbicides for Rope Twitch Control. For further information see DPIPWE's Weed Links and Resources.
- Rope twitch is not declared in Tasmania.
twitch is widespread in agricultural and horticultural areas in
Tasmania. In recent years it has become widespread in the intensively
cropped areas of the North-West coast. It is also common in parks and
recreation areas, and in domestic gardens.
- Rope Twitch is a
serious weed in areas of annual cropping, particularly for crops such as
onions. If present at moderate to high densities, rope twitch reduces
the yield of all crops, including cereals.
- Rope Twitch is not
normally a problem in vigorous, well managed pasture with adequate water
supply. However where pasture vigour declines rope twitch can quickly
dominate. In pasture on light textured soils, rope twitch may form dense
mats which exclude all other pasture species. Its occasional prostrate
(or ground hugging) habit in pasture makes it of little value for
- In gardens rope twitch is considered one of the worst
weeds in Tasmania. It can infest all areas including herbaceous borders,
ornamentals shrub beds, vegetable gardens, potted plants and lawns. If
allowed to proliferate unchecked it can become the dominant plant in the
Rope Twitch Control Guide
Herbicides for Rope Twitch Control
Weed Links and Resources
Other useful links
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