Posted: 14/03/2014 at 16:21
There is one slight caveat about lichen on fruit trees. they do provide a home/shelter for some of the nasties which can damage the trees. At Powys Castle when they washed the lichen off their Apple tree collection, there was a dramatic improvement in the quality of the fruit.
Personally , like everyone else I like to see the stuff, but it is worth keeping an eye on it for the said creepy crawlies.