In article ,
Chris Hogg wrote:

Don't know anything about flower walls, and I suspect collecting ferns
from the wild is illegal (but IANAL), but you can buy them online, see
for example http://www.plantsforshade.co.uk/acatalog/index.html . You
would probably need a north-facing wall to grow them successfully, as
most of them like damp shade.

It's not illegal, except for a few species. However, while taking
plants from the wild is often ecologically better than buying them,
ferns are a group that is usually harmed by the practice.


Regards,
Nick Maclaren.