An introduced perennial weed grows in coastal areas, sand dunes, open places, roadsides, waste lands, agricultural fields, ditch banks, etc. from sea level to about 1200 m asl. It is ranked as one of the 10 worst invasive weeds of the world. Spear Grass usually flowering after stress such as drought, burning and cutting. The seeds disperse by the wind and remain viable for over one year.
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