Westeria growth advise

We have a wisteria plant at our house. It was blooming well, till about beginning of winter this year, after which all the leaves started falling off. For the past 4 months there's no growth of leaves. The plant is not dead and I don think there any disease. Is this natural. Any suggestions to this. Appriciate any advise

I believe wisteria is deciduous, meaning it loses it's leaves in the winter... like most plants. Or am I missing something in your question?

Thanx for the reply. I was not aware of this.