How to prune tommies crocus

Remove spent flower heads in late winter/early spring if limiting spread; clear dead foliage by late spring. Pinch off or snip spent blooms at the base if controlling self-seeding. Leave all foliage until completely yellowed. Never mow or cut grass over naturalised drifts until leaves have fully died down.

Rarely; once per season. Tommies Crocus (Crocus tommasinianus) needs almost no pruning. It naturalises freely and is best left largely alone. Allow the fine, grass-like foliage to die back completely — typically 6–8 weeks after flowering — before removing it. If you want to reduce self-seeding (it spreads enthusiastically), deadhead spent flowers before seed capsules ripen.

Pinch off or snip spent blooms at the base if controlling self-seeding. Leave all foliage until completely yellowed. Never mow or cut grass over naturalised drifts until leaves have fully died down.