It can be invasive. I'll take pix of mine later. It's growing up a light pole. If you trim new growth, you will stop it from flowering. Not a good thing. Guessing you trim it after it quits blooming. Can't kill it..
PRUNE HARD now, PRUNE HARD mid summer, PRUNE HARD next March (each branch down to 3 or four nodes) and root pruning is another thing you can try. If grown from seed no matter how you prune it can take from 7 to 10 years before you see the first bloom, ask me how I know this. When buying a wisteria always buy one in flower or one where you can see the flower buds starting to swell. I always prune mine about now and then again in the summer, I get 3 flushes of bloom each year, the first is always the showiest before the leaves emerge and two smaller flushes in among the leaves later on. Thankfully not invasive here.
Thirty years here and nary a bud. I just might try threatening mine with a shovel and pruning shears. Heck, if I extend the raised-bed garden, it will be in the way so it may be history next year anyway.
Like Nyboy, mine isn't overly invasive here. It is about 6 feet high and 3 feet around. For a wisteria it is well-behaved if disappointing. Mom gave me a plant she'd mislabled. Turned out to be a wisteria that ran rampant through my tree and shrub 'nursery' and taking years to eradicate.
We have red trumpet vines that grow wild here on our place and all around. The sheep eat any new sprouts, they like them. We also have red honeysuckle that is a wild vine.
My Mom wanted to plant a one of those UNDER her back deck (almost a 2nd story high) and let it come out the lattice all around. I FINALLY convinced her that it would rip the deck off of the house. She planted it out in the yard and tried to keep it pruned into a cute little tree... When it was about 6 yrs old, and Dad got sick of mowing the sprouts in a 15' circle around it, it was cut down. After several years of STILL mowing the sprouts I attacked it with my 'kills EVERYTHING' mix.
... He's still mowing sprouts - just not as many.. yet.