Posted: 01/02/2016 at 18:12
.... The forest floor is not made of wood chippings, but from well rotted leaves.....isn't it?
Lots of well-rotted leaves, some small decomposing twigs and the remains of any rotten fallen trees which have been broken down by fungi and bacteria - I believe that the presence of the fungi and bacteria makes a large contribution to the fertility of the woodland floor.
At a push foxgloves can cope with some sunshine if their roots are happy - however I'm not sure that they will be happy in woodchip.