Yeah, I'd really like to have it confirmed. People in game say yes it does drop (some of them) other's say no it does not. I am not sure if they are basing their information on the PTS since they supposedly dropped there while seeding or not.
in my experience there are some drops, limited though, when using seeds.
when i was lvling my sub in Enchanted Valley (well known for spellbook ONLY drop area), i used seeds, and all of a sudden a mob dropped a dwraven war hammer. i was really shocked but really satisfied.
then i thought that maybe, noly important items will drop while seeding. some clarification on the life stone thing would be useful though.
Most probably seed failed.
But it's interresting ... it happens to me pretty often that when I seed on lowbie alts, one seed fails and I get full drop. But when I try to hunt that area to get desired full drop ... ee no way.
It would be nice to get a sure answer but I bet this is one of those ingame thingies we gotta find out for ourselves. Life stones are dropping at a pretty nice rate so it should not take long before all those farmers will have to dump them cause their warehouses are full. Until I get the augment I want it looks like no manoring for me.