Gonzague Lurton explains his decision to transfer his second growth Margaux property, Durfort Vivens into 100% organic production by harvest of 2013. He started the process in 2009 on only 20% of production and has seen some interesting changes such as thicker foilage
http://www.thedrinksbusiness.com/2012/11/durfort-vivens-to-become-100-biodynamic/