There are two varieties of common vetch found in Great Britain, one with slender stems and narrow leaflets and the other with taller, stouter stems and broader leaflets. It was this second variety that was cultivated in Great Britain in the 18th century so that its seeds could be used for pigeon food.
Common vetch can be distinguished from other types of vetch found in Britain because it usually has a pair of flowers and two black-blotched stipules at the base of each leaf.
The stems of common vetch straggle along the ground or climb by means of tendrils on the leaves, which have four to eight pairs of leaflets. The plant grows up to 48 inches (120 cm) high.
Common vetch flowers from May to September. The flowers are purple in colour. The pods are smooth or slightly hairy and contain between four and twelve seeds.
© John Welford