How to prune allium 'globemaster'

Remove spent stems in mid to late summer once the globe dries and loses its appeal; clear foliage when fully yellow. Cut each flower stem to ground level with secateurs. Do not cut or tie back the foliage early — it must yellow completely before removal to maintain bulb vigour.

Once per season; clear spent stems and foliage annually in summer. Allium 'Globemaster' requires minimal pruning. Its large sterile flower heads do not set viable seed, so deadheading is optional — the dried spheres are prized as ornamental features. Remove flower stems at the base once they become unsightly, and allow the foliage to die back fully before clearing it away.

Cut each flower stem to ground level with secateurs. Do not cut or tie back the foliage early — it must yellow completely before removal to maintain bulb vigour.