How to Prune Istrian deeply-incised-leaved hellebore?
Remove old leaves to help prevent hellebore leaf spot; old faded flower stems can be deadheaded, but if they are left the plants will self-seed

Istrian deeply-incised-leaved hellebore · Helleborus multifidus subsp. istriacus
Grow in fertile, moisture-retentive, humus-rich but very well-drained soil which is preferably alkaline, in light dappled shade and with shelter from strong, cold winds, and mulch every autumn with leaf mould, chipped bark or other organic matter; for more advice, see hellebore cultivation
Remove old leaves to help prevent hellebore leaf spot; old faded flower stems can be deadheaded, but if they are left the plants will self-seed