I know the ivy sort of glues itself to whatever surface with little sticky pads so that will take care of itself on the back of my house but can I use the existing Ivy for the wisteria to grab onto and climb up or will the wisteria be too heavy and pull the ivy down? I'd rather avoid having to build something for the wisteria to wrap itself around. Any suggestions? Thanks! : )
The wisteria will climb on anything and everything it can get it's tendrils on. But are you sure you want it on your ivy? Wisteria is the most aggressive grower,and will overtake the ivy, choking it out. As a matter of fact it's not the kind of plant to have close to your house. I know,the blooms are pretty and all but the rest of the plant is a holy terror on your siding,shingles,etc. If you still want to plant it near your house, choose a spot well clear of the power lines that supply your electricity.
No, ivy isn't that strong. One can easily unzip it from the walls. Wisteria is way too heavy for ivy. Plus you have the root competition down below. Ivy creates an incredible dense mat of roots , little grows with it. Wisteria would have quite a battle on its hands for root space and nutrients.
