Hard neck might be later, but I think I pulled my soft neck in early July last year and I had waited too long, the papers had burst around the cloves. I've also heard of spring planting garlic, that may mature later?
Discussion
Ah, the hard neck vs soft must be the difference. We were told by a **serious** garlic geek to harvest around August/September and plant in September/October.
https://osseeds.org/ossi_variety/arsia-2/
Not sure what's going on with Garlicana, but you can get a sense of the level of knowledge here:
https://web.archive.org/web/20230602223129/https://www.garlicana.com/garlic-varieties/porcelain/