I've had my wisteria for about 6 years. The main trunk is about 2 feet tall. It has never bloomed. However, foliage covered a wooden arbor. Last August we had a hurricane and the arbor blew over. We had to cut away the vine and only the trunk remained. Now lots of foliage is growing all over the trunk and a couple of very thin vines are starting to climb the arbor. Is there anything I should do at this point to help the plant along and encourage blooms? Thank you!