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Chilean Needle Grass

Chilean Needle Grass (Nassella neesiana ) is declared noxious in the Illawarra District Weeds Authority control area (including Kiama, Shellharbour and Wollongong council areas).

The weed control class 3. This means that:


The plant must be fully and continuously suppressed and destroyed”.

Description: Chilean Needle Grass is a perennial, tussock forming grass which grows in dense clumps. It can grow to 1m in height and produces three types of seed. – panicle seed on distinctive seed heads in spring/summer and stems and basal seed throughout the year. These seeds are all self fertilized and enable the plant to reproduce despite grazing, slashing and fire. The flowering seed heads are a distinctive purplish colour and the seeds are very sharp at the point. Its leaves are 1-5mm wide, flat and strongly ribbed on their upper surface, with leaf edges that are rough to touch. Vegetative growth occurs throughout the year except summer. A native of South America.

Problem: Chilean Needle Grass is one of Australia’s worst weeds. It invades native grasslands, agriculture lands, roadsides and urban parks and reserves. It displaces palatable pasture species and can reduce productivity by up to 50%. It has low feed value and is unpalatable to sheep and cattle. It is hard to identify, seeds prolifically and is readily dispersed by water, animals and man (machinery) and is particularly difficult and costly to control once established.

Control Plan: Click here

For more detailed information click here