David Rance schrieb:

Lord Rothschild once said, "No matter how small your garden is, you
should aim to have a minimum of a quarter of an acre of natural woodland
in it." On another occasion he wrote, ".No matter how small your garden,
always leave a few acres down to wild woodland."

Thank you very much indeed, Sally and David. Lionel de Rothschild sounds
very likely to be the originator. I wasn't aware of the size of "just" a
quarter of an acre. :-)
Again, many thanks
Gotthelf