How to Prune Indian pea?
No pruning required, but deadheading before seeds have formed will prolong the flowering season

Indian pea · Lathyrus sativus
Also known as: blue-flower'd lathyrus; chichling-vetch; chickling pea; chickling vetch; dogtooth pea; grass pea; khesari; Riga pea
Grow in full sun in moist but well-drained soil, and provide support or grow next to shrubs over which it can scramble. See sweetpea cultivation for further information.
No pruning required, but deadheading before seeds have formed will prolong the flowering season