Cock's-foot grows in dense perennial tussocks to 20–140 cm (8–55 in) tall, with grey-green leaves 20–50 cm (8–20 in) long and up to 1.5 cm (⁵⁄₈ in) broad, and a distinctive tufted triangular flowerhead 10–15 cm (4–6 in) long, which may be either green or red- to purple-tinged (usually green in shade, redder in full sun), turning pale grey-brown at seed maturity.
The spikelets are 5–9 mm (0.20–0.35 in) long, typically containing two to five flowers.
It has a characteristic flattened stem base which distinguishes it from many other grasses.

It flowers from June to September.
Cock's-foot grows in dense perennial tussocks to 20–140 cm (8–55 in) tall, with grey-green leaves 20–50 cm (8–20 in) long and up to 1.5 cm (⁵⁄₈ in) broad, and a distinctive tufted triangular flowerhead 10–15 cm (4–6 in) long, which may be either green or red- to purple-tinged (usually green in shade, redder in full sun), turning pale grey-brown at seed maturity. The spikelets are 5–9 mm (0.20–0.35 in) long, typically containing two to five flowers. It has a characteristic flattened stem base which distinguishes it from many other grasses.
It flowers from June to September.
Dactylis glomerata