Boston ivy

Question

Is there a way of getting boston ivy suckers (not sure if that is the right terminology) of uPVC Window frames?

Answer 1

I'm not clear if your trying to get it to grow on the windows or remove it from the windows.
It's not likely the Ivy would adhere to a slippery surface such as vinyl window frames.

https://www.gardeningknowhow.com/ornamental/vines/boston-ivy/boston-ivy-near-walls.htm