they should bloom all summer and when the temps drop under 40 at night - they should slow down and stop blooming. i live in an area that gets to freezing but not often and not for long - mine go dormant during the winter and i just have to make sure they don't freeze. if its going to be at freeze or below, then definitely bring them inside. if they are warm enough they can continue to bloom all winter. i have been using fertilizer from hidden valley hibiscus - it has a really low middle number. hibiscus in pots really like their food.

Thank you!