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Giant reed is a bamboo-like grass that can grow to 8m tall. It has a very strong, dense root structure that spreads outwards and downwards. Leaves are bluish-green or white-striped, and fluffy seedheads grow at the tops of the stems.
Giant reed can grow on a range of soil types, but prefers areas where the soil does not dry out completely; such as moist forests, shrublands, roadsides, wastelands, domestic gardens, and river/stream/lake edges. It can also tolerate semi-saline conditions growing on the banks of estuaries and coastal areas.
Giant reed is a very fast-growing, aggressive species that can out-compete native plants and form dense stands. It can alter ecological and successional processes and change habitats. It is tolerant to different climates and can survive and grow at almost any time under a wide variety of environmental conditions. The horizontal rhizomes (roots) of giant reed allow it to grow outwards to form large colonies, and it also grows from plant fragments.
Minimise herbicide contact with the soil and other vegetation as Amitrole is non-selective, residual and corrosive.
Follow up frequently to check for regrowth.