Posted: 13/05/2015 at 17:55
It won't necessarily cling to the wall on its own.
To train it to a brick fence or barrier is easy enough but not automatic as the vines will be more inclined to be groundcovers & not climb anything until they find something wooden (tree or fence), & even then won't necessarily climb up unless its seeking sun -- if plenty of sun reaches it it's not that interested in climbing. You might get a trellis to attach closer to the brick, in order to have something to wind the ivy through & upward; once established on the trellis it will continue to spread left & right even on the untrellised part of the brick. If it could be planted above the wall like on a cliff edge, it would spill down more readily than it will climb up without encouragement. Or if you even just train it up a few slender sticks that are placed up against the bricks,
Eventually each upward-trained vine will find a part of the wall it wants to adhere to, & then the stick can be broken out of the vine, & it'll continue to spread on the wall.