How to prune persicaria amplexicaulis 'firetail'

Late winter to early spring before new growth emerges. Cut all stems hard to the ground (to within 5–10 cm) in late winter or early spring. Remove any damaged or yellowing foliage during the season as needed.

Cut to ground once annually in spring; tidy mid-season as needed. Persicaria 'Firetail' needs very little pruning beyond cutting the whole clump to the ground in late winter or early spring. Its poker-like red flowers appear over a long season without deadheading being necessary, though removing tatty foliage mid-season tidies the plant. It is vigorous and self-cleans reasonably well.

Cut all stems hard to the ground (to within 5–10 cm) in late winter or early spring. Remove any damaged or yellowing foliage during the season as needed.