Posted: 17/02/2013 at 14:03
Hi again Keith
Sorry, don't know about tree ferns.
But I think you should start a new thread with this query and put tree fern into the thread title. That way people who know about tree ferns will see it and reply.
Nut, you are so helpfull, create a new post for anyone who has knowledge on that will see it - it may be lost on this thread).
And if your lucky Kieth, Nut may even bring you a cuppa and some cake..