Hi,.
in most of the Arum species the main growth season is spring, but the bud begins in autumn. So immediately, you should pot the italicum. Which are very sensitive to long dry season, so I let my Arum tubers year-round in a pot or in the flowerbed consider always slightly moist them (don't worry, that not lazy!). If there is ever a recognisable period of rest, this is my experience also in the winter, but rather in the middle of summer to autumn.
Yesterday, I have some A. italicum, maculatum and nigrum potted to and could already a significant outgrowth of origin see for some tubers, others are still in peace. Of these three types I have plants in the flowerbed, they survive the winter really easily. If you have a cold greenhouse italicum definitely in the wild is best removed.
I would also immediately plant the Dracunculus. I have last winter have a very large tuber and treated them as Amorphophallus, so just put into the cellar, and eingetopft in the spring. This was a big mistake, because it was too hot in the bud and the urge has died shortly of the Earth's surface. I then noticed the pot no further and simply left in the garden. Yesterday, I looked to then still in the course of my Umtopf action, and found a healthy tuber with three small flushes (each approx. 2 to 3 cm long) and roots.
This type seems to be starting in the fall with the expulsion and a "cool grower" and has the main growth period in the spring. This is also quite logical, because in the region of origin of this plant there the most rainfall and significant summer drought in the winter.
Last winter was discussed already in this thread about it, some also have very beautiful pictures:
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MfG Philipp