The message
from Sacha contains these words:

In 'the old days', people had fruit cages to keep birds away from soft
fruits. My outlaws grew sweet peas up the inside of theirs and all the
fruit in the middle. Why should you not do that with a veg. cage? The mesh
could be small enough to exclude everything, if that is what you want.
Indeed, the mesh could be the size of an American 'screen porch'. I've
never really understood why we don't have those in UK - nothing, including a
political canvasser would get past that kind of mesh! ;-)
Depending on your circumstances it could be on wheels or on long 'legs'
which would push into the ground by a foot or three and leave the cage on
top of the earth, doing its job; there could be many variations on this
theme.

You can get two grades of that screen - a green one with holes about
half a millimetre square, and a fine grey one with much smaller holes -
small enough to keep out mushroom fly.

Decent hardware shops keep them.

I think the green one is sold as greenhouse shade.

--
Rusty
Open the creaking gate to make a horrid.squeak, then lower the foobar.
http://www.users.zetnet.co.uk/hi-fi/