Overgrown ivy wall...suggestions on how to tame? (growing, backyard, pruning)

[jayrandom]

There's an ivy covered retaining wall in my backyard. The wall itself is ugly but when covered with ivy it looks very pleasant. The problem is that the ivy is just growing like crazy and I want to rein it in a bit, but I'm not really sure the best of doing that. Any ideas?

[need4speed2012]

Controlling Overgrown Ivy | Pruning Ivy: Gardening

[jayrandom]

Thanks!