Posted: 30/01/2014 at 19:49
Sow earlies in late March, cover from late frost.
Sow second earlies mid to late April.
Sow maincrop late April to mid May.
Hope this is of help.
As bob says there is no need to chit potatoes at all.
Another great thing about potatoes is they quickly cover up the groung and supress weeds.