Wisteria sinensis 'Caroline'

wisteria caroline

Question from emily plant

CAN ANY ONE HELP I BROUGHT A WISTERIA LAST SPRING AND I WANTED IT TO GROW UP THE SIDE OF THE HOUSE BUT IT IS CONCRETED SO I COULD NOT PLANT IT IN THE GROUND I PUT IT IN A LARGE POT AND IT WAS DOING WELL IT HAS GROWN ABOUT 12 FEET UP THE WALL BUT NOW ALL THE FOLIAGE HAS FALLEN OFF IS THIS NORMAL DUE TO THE WEATHER AND WILL IT BE OK IN THE POT ? X EMILY X