Paspalum Grass

Paspalum is a tufted, perennial, warm-season grass that forms coarse clumps with broad, flat, light to mid-green leaf blades that are noticeably wider and softer than most desirable turf species. It grows from a short, thick rootstock with fibrous roots and can develop shallow rhizomes, allowing established clumps to persist and slowly expand. The seedhead is the most distinctive identifying feature: a tall, upright flower stem bearing two to several finger-like racemes carrying rows of flattened seeds, often with dark purplish-black anthers protruding, giving mature seedheads a distinctive fringed appearance.

Seedlings emerge from germinating seed as broad, pale green blades that quickly form a low rosette before tillering out into a clump. As the plant matures it produces tall seed stalks that rise well above the mown turf canopy within days of mowing, making paspalum highly visible in lawns and sports turf even when vegetative growth is kept short.

It is a common weed of lawns, sports fields, golf courses, pastures and roadsides throughout the warmer and temperate regions of Australia, particularly in coastal and higher-rainfall districts. Growth is most vigorous during the warmer months from spring through to autumn, with seedheads appearing rapidly after rain or irrigation, especially in poorly maintained or thin turf.

Management relies on maintaining a dense, competitive turf sward through appropriate fertility, mowing height and irrigation to reduce establishment opportunities, combined with regular removal of seedheads to limit further spread. Isolated clumps in high-value turf are often physically removed, while selective control in established grass areas is timed to actively growing plants and may need repeat treatment given the plant's persistent rootstock and seed bank.