How to Prune Lathyrus odoratus 'Lady Grisel Hamilton'?
Cut regularly to encourage more flowers; allowing seed pods to form will stop plants from flowering

Lathyrus odoratus 'Lady Grisel Hamilton' · Lathyrus odoratus 'Lady Grisel Hamilton'
Grow in humus-rich, fertile, well-drained soil in full sun or light dappled shade. Provide support and feed with a balanced liquid fertilizer every two weeks when in growth. See sweetpea cultivation for more detailed advice
Cut regularly to encourage more flowers; allowing seed pods to form will stop plants from flowering