How to prune persicaria amplexicaulis 'blackfield'

Late autumn after the first hard frost, or early spring before new shoots emerge. Cut all stems to 5–10 cm above ground with shears or secateurs. This is the only pruning required; the plant regrows vigorously each spring and self-manages in season.

Once annually. Persicaria amplexicaulis 'Blackfield' needs only a single annual hard cutback. Remove all top growth to near ground level in late autumn or early spring. It flowers continuously from midsummer to first frost, so no deadheading is needed during the season — just clear dead stems once dormancy arrives.

Cut all stems to 5–10 cm above ground with shears or secateurs. This is the only pruning required; the plant regrows vigorously each spring and self-manages in season.