Someone has asked me to do a version of this tune in the same style as 'Banks of the Ohio'.
Unfortunately it doesn't lend itself to the same sort of improvisations because it's too simple but here are some variations.
I won't put in the absolutely basic version because it'll sound just like the Carter Family one which sounds like this:
Wildwood Flower (right-click and open in a new window or it'll take you away from this page)
It's done with the same cross-picking style as detailed in the 'Banks' lesson so I won't repeat it all.