Drying and Separating your Tubers
Which season is best to separate your tubers?
Basically, the decision needs to be made whether to divide your tubers in the fall or in the spring. In the fall, the bulbs are softer and easier to divide but the germs are more difficult to see. Furthermore, despite providing easier storage by having individual tubers, the bulbs often tend to dry near the stem while they are stored over the winter. By contrast, however, many people like to approach this process in the spring. More often than not, tubers which were attached to the stem all winter will have preserved better.
The separation process
You can can also mix both approaches by separating your tubers partially in the fall - and separating the rest as the need arises. If you have a large clump with many tubers, or they are tightly bunched together, you can separate into several "grouped" pieces for storage, click here for a more detailed explanation regarding storage.
Additionally, many people will treat their bulbs before storage. You can rince your bulbs in a javel/water solution (12ml per litre of water), rinse them with a commercial fungicide or even treat the cuts with a sulfur-based product.
Drying your tubers
For drying, find a well-ventilated, cool and not-too-sunny location. Drying in a hot place, like a greenhouse, will only precipitate the drying-out of your tuber - they will tend to shrivel. Once your tuber is dry on all sides, it is ready for storage. A good test is the Sharpie test: if you can write on it with a marker, it is dry!
Even your damaged tubers can survive!
As you can see, some of the large tubers were accidentally cut by the shovel during unearthing. These tubers, even though damaged, are a good bet to be able to produce the following season. The important thing is that there is no damage near the base of the collar.