We don't have Boston Ivy, Parthenocissus tricuspidata, but we do have the related Parthenocissus henryana right up the back of our house, about 40 feet.

Firstly, understand that it is a woody climber and it will form a permanent framework of branches. So, for Heaven's sake do not cut it to the ground! We do not prune ours back in fall at all. We have to trim it about twice a year, when it looks as if it needs it, and since the house is 4 storeys high this involves hanging out of the windows as far as we can with long handled loppers. All you need to do it cut back anything encroaching on the windows or reaching up to the roof. Leave the rest alone. If, as you had to with the gate, you must cut it back, follow the piece you intend to cut to make sure it is not supporting a lot of foliage elsewhere.

It will not need any care, as in feeding or watering at all. All it needs is keeping within bounds.

Also, my house is made of solid stone and the creeper does no harm. If yours is wood or siding you may need to think sdom of having the creeper on it. Good luck. Just wait for the autumn colour!

You should have new growth buds coming on around the bald spot, next spring, that will slowly fill it in. If you want to further encourage growth towards the bottom of the mass, prune off some of the growing tips as you see them leafing out early next year.

Another thing: don't pull on Boston Ivy. Unless you want it off. I'm told that it can't reattach itself to walls, it has to grow all new tendrils/disks to do that, and the previously tugged on portion will not have any support. Just FYI.