[Cob] cob raised beds?

[Daveena T]

I am interested in building raised beds out of something other than wood and
I was wondering if cob could be an appropriate medium.  I like the idea of
being able to build beds in interesting shapes rather than just straight
lines.  I also like the possibility of building in little sitting areas or
shrines.  

 

Would cob beds stand up to the constant contact with soil?  Could I line
them or finish them with something if the soil would be a problem?  Would
some kind of flashing be necessary?  Any more ideas or examples of people
who have done this?

 

Thanks, DT in Portland, OR