my WW's fan leaves turn yellow and fall off after 6 or 7 weeks...everytime; since 2005...makes trimming a breeze...:thumbsup:

I think most of the 'white' strains do this. It usually doesn't affect the buds. I think it's the plants way of getting rid of what it don't need. It sucks the nutes out of the leaves and drops them....IMO.