How to prune hylotelephium 'purple emperor'

Early spring before new shoots emerge. Cut all overwintered stems to 5–8 cm above the crown in early spring. Avoid autumn pruning. If the clump becomes congested after several years, lift and divide in spring to rejuvenate rather than pruning harder.

Annually in spring. Hylotelephium 'Purple Emperor' is a low-maintenance sedum that needs only an annual spring cut-back. Leave the dark stems and seedheads standing through winter for structural interest and wildlife, then cut hard to just above ground level in early spring. No pinching or mid-season trimming is necessary.

Cut all overwintered stems to 5–8 cm above the crown in early spring. Avoid autumn pruning. If the clump becomes congested after several years, lift and divide in spring to rejuvenate rather than pruning harder.