Ranunculus Corms

HI All

I have planted ranunculus for the first time and I am disappointed because they have already stopped flowering although Parkers state that they will flower throughout the summer months (May June and July).  It is more than possible that it is my fault for not giving them enough water during the dry May. 

Is it likely that they will flower again? 

When their season is definitely finished should I lift the corms or should they be treated like annuals?

Thanks