Posted: 05/09/2014 at 21:33
Fb2 you must let them die down naturally to ensure they absorb all the goodness in the leaves back into the bulb, to give you a fighting chance of a repeat show the following year. When they are totally browned off, you can tidy them up. Takes about 6 weeks. If you leave one of the stalks showing you have a marker as to where they are.
Alternatively take a photo?