How to Propagate perennial golden pea?
Propagate by division in early spring or propagate by seed

perennial golden pea · Lathyrus aureus
Best grown in fertile, humus-rich, well-drained soil in full sun or partial shade; as a calcifuge, avoid attempting to grow it in chalky soils. See sweetpea cultivation for further information
Propagate by division in early spring or propagate by seed