19. September, official start of harvest this year.
Articles:
3. October, a record yield of mandarin
(beware of google translation )
http://translate.google.com/translate?&hl=en&u=http%3a%2f%2fwww%2eagroklub%2ecom%2fvocarstvo%2frekordan%2durod%2dmandarina%2f3834%2f

9. October, harvest in momentum:
http://translate.google.com/translate?&hl=en&u=http%3a%2f%2fwww%2edubrovacki%2ehr%2fclanak%2f23166%2fpuni%2dkamioni%2dmandarina

27. October, tens of thousands of tourists visited groves this season:
http://dnevnik.hr/vijesti/hrvatska/berba-mandarina-turisticki-hit-na-jugu-hrvatske.html

Video:
American tourist was there too, as guest in local TV show
http://www.youtube.com/watch?v=ScAKGznwz6w&feature=mfu_in_order&list=UL

Thanks Ivica, great post. Croatia is a beautiful country. Wow, that's a lot of mandarins! I see they will be heading to Asda, Tesco and Sainsbury's? I will pick up a bag and try them out! Which variety of mandarin are they? How hardy are they? Do they have seeds?

Lemandarangequatelo,
I guess that those mandarins disappears fast from shelves, be fast, good luck.

Probably mostly Unshiu but I have no idea what varitey those should be, the list of possible ones is long.
Hardiness: something in line with -8C, -10C if exposed a few hours only.
I have no exact data per specific variety.

Mostly seedless, but that also depends on variety.

More about varietes:
I have data of citrus introduction (given by Dr. Z. Gatin) only for period 1965-84 and for one experimental field. Here is the list, splited in 2 parts:
http://img232.imageshack.us/img232/5937/introdukcija19651984.jpg
http://img715.imageshack.us/img715/2539/introdukcija19651984002.jpg