Answer: Many of the "ivy covered" walls are covered in English ivy or Hedera helix, an evergreen. Others are covered with "Virginia creeper" or one of its relatives such as Engleman ivy; these are deciduous vines. Their culture is approximately the same, however. Plant them at the base of the wall, allow them a year to become established, one more to grab hold, and a third year to "take off". They will attach to the wall all by themselves using little sticky roots hairs. These hairs can be nearly impossible to remove from the wall or building, so be sure you really want the vines there. Also be aware that once they have covered a building they need to be trimmed regularly to keep them out of the window frames, guttering, and so on.
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