Long, white flowers with yellow details on a fantastic Wisteria I bought as a standard (ie multi-stemmed) but which I moved back in the bed against the fence after a few years and which has now spread across everything - the side arch, the back of my house, the back of my neighbpours' house etc and flowers profusely and often repeats later in the year. I didn't keep the label so I am not certain whether it is Japanese or Chinese. I think it's chinensis because the flower clusters are fairly long.

The best tip anyone ever gave me about buying Wisteria was always to buy them in flower, otherwise you can wait seven years. I have stuck to this and all mine have flowered from day one. I also make sure I prune them properly, down to a few buds. It makes a huge difference.