Plant in the spring or fall. As you may well know - Grow in fertile, moist but well-drained soil.
Ensure placement has full Sun. Though wisteria will grow in partial shade, it probably won't flower. Sun is essential.
If your soil is in poor condition, add compost; otherwise, wisteria will grow in most soils.

Dig a hole as deep as the root ball and 2 to 3 times as wide. Space plants 10 to 15 feet apart.
Choose a site that will not overwhelm nearby plants as wisteria grows quickly and can overtake other plants.

Hi, welcome to GoY, presumably it's currently growing in a pot, so can be planted at any time the ground isn't frosted or waterlogged, any time now would be good, just make sure it doesn't get too dry, Derek.