Don’t cut the leaves off.
Carefully dig up the clump without bruising the bulbs.
Gently prise apart the bulbs and replant as soon as possible.
Water in to allow good contact between soil and roots.
The leaves will die back – This process allows to the bulb to store food in order to survive through until next year when the flowers will appear.
The interactive plant selector and pruning guide CD-ROM s has hundreds of bulbs and all accompanied with plant care and images.