Picture posting is enabled for all :)
You can lift them almost any time from finishing flowering to new growth appearing. It all depends on the temperature of your soil. In a warm area then it does not matter.Split the clump up into individual strings of corms, but do not split the strings themsleves. Each corm is capable of making a new plant yes, but it will not flower until it has formed a string, the top one uses the lower ones as a food source to give it the energy to flower.The top of the top corm should be planted probably about 6 inches below soil level (according to the latest info I have from the National Collection holder.).
In my humble opinion crocosmia lucifer and montbretia are total absolute and utter thugs. They very readily self seed, and the corms multiply at an alarming rate.valmarg