Agrostis stolonifera is stoloniferous and may form mats or tufts.
The prostrate stems of this species grow to 0.4–1.0 metre (1 ft 4 in–3 ft 3 in) long with 2–10-centimetre (0.79–3.94 in) long leaf blades and a panicle reaching up to 40 cm (16 in) in height.

The ligule is pointed and up to 5 millimetres (0.20 in) long.
This differs from common bent, Agrostis capillaris, which is short and does not come to a point.

The leaves are tapering, often with a blue-grey colour.
The grass is not tufted and the spikelets are red and tightly closed within the panicle.
It flowers in July and August.
Agrostis stolonifera is stoloniferous and may form mats or tufts. The prostrate stems of this species grow to 0.4–1.0 metre (1 ft 4 in–3 ft 3 in) long with 2–10-centimetre (0.79–3.94 in) long leaf blades and a panicle reaching up to 40 cm (16 in) in height.
The ligule is pointed and up to 5 millimetres (0.20 in) long. This differs from common bent, Agrostis capillaris, which is short and does not come to a point.
The leaves are tapering, often with a blue-grey colour. The grass is not tufted and the spikelets are red and tightly closed within the panicle. It flowers in July and August.
Agrostis stolonifera