I've never heard of fiddle TAB. (which doesn't mean it doesn't exist) Your best bet might be searching on mandolin TAB, there's a lot of it out there. (And I got lots of results on a Google search for "mandolin tab wildwood flower".)

Obviously, you won't get advice on bowing that way, just the left hand. Also, with mandolin, arrangements tend to be more notey -- since there's no sustain, extra ornamentation is used to fill in. The first result on my Google search gives a pretty basic version, though: clicky.

~ Becky in Long Beach