How to prune boneset

Late spring for pinching; late autumn or early spring for full cutback. Pinch the top few centimetres off each stem in late spring to promote branching. After flowering, shear off seed heads if self-seeding is unwanted. Cut all stems to 10 cm above the ground in autumn.

Once in late spring; annual hard cutback. Boneset is a robust native perennial requiring minimal pruning. Pinch stem tips in late spring to encourage a shorter, bushier plant less prone to flopping. Deadhead after flowering if you want to reduce self-seeding, or leave seed heads for birds. Cut all stems to near ground level in late autumn or early spring.

Pinch the top few centimetres off each stem in late spring to promote branching. After flowering, shear off seed heads if self-seeding is unwanted. Cut all stems to 10 cm above the ground in autumn.