It's interesting that this post should appear, as I am trying to
> do the opposite. I have a white fence that I am hoping to never paint again,
> as it will (I'll keep my fingers crossed) be covered with English Ivy.
> I have heard that there is a particular type of string that one should use
> to tie ivy to vertical surfaces. The string supposedly biodegrades after
> one season. Can anyone make a specific recommendation?
Don't do it! Unless you are in its native land. We are battling our neighbor's ivy as well. There are so many other options for your fence!