CherryTree wrote:

Many thanks to everyone replied. So it is white netting then. But is
there a simple way of applying it on an 8 meter tall tree without a
helicopter?

One would think by the same method by which you harvest cherries 8
meters up. LOL

Commercial orchard growers prune/train trees to a height/configuration
so that they can easily harvest fruit from an orchard ladder.
http://www.sherrilltree.com/Professional-Gear/Ladders_2
The homeowner typically grows semi-dwarf fruit trees, they'll grow to
a 4 meter height but typically kept to a 3 meter height. Perhaps you
should visit a cherry tree orchard and note their tree height and
configuration.
http://i43.tinypic.com/jij5uq.jpg