How to prune paeonia lactiflora 'karl rosenfield'

Autumn once foliage has yellowed; deadhead immediately after flowering in late spring. Cut all stems to 2–3 inches above soil in autumn using sharp, clean secateurs. Remove all cut material from the bed to prevent botrytis. Deadhead by snipping just below spent blooms. Never remove green leaves mid-season.

Once annually in autumn; deadhead as blooms finish in late spring. 'Karl Rosenfield' is a vigorous herbaceous peony that dies back to the ground each winter. Cut all stems down to near soil level in autumn after foliage yellows. Deadhead faded blooms promptly to reduce disease pressure. No summer pruning or shaping is required — healthy foliage should be left intact to build energy reserves.

Cut all stems to 2–3 inches above soil in autumn using sharp, clean secateurs. Remove all cut material from the bed to prevent botrytis. Deadhead by snipping just below spent blooms. Never remove green leaves mid-season.